Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d215de466eacd26…

MALICIOUS

PDF

83.8 KB Created: 2021-08-04 16:28:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f68572c4277e7d2046b2f47d13c8d3e5 SHA-1: 889b82d3f7bc168128d5d0bff6c99cf2a999a439 SHA-256: 9d215de466eacd26ba366276a26ff0197f0638210d2761b838f830326199973b
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links to external websites, many hosted on compromised CMS platforms, suggesting a link farm designed to lure users to malicious sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of a download button heuristic further supports a deceptive workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://chcial.ru/uplcv?utm_term=arabic+alphabet+tracing+worksheets+printable PDF link annotation
    • https://wlao.on.ca/wp-content/plugins/super-forms/uploads/php/files/923af29584ee119486628048bad5bd07/lefedajegidek.pdfIn PDF document text
    • https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b21e6217cbf---24027894329.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/l7fide3mbpk68smdf1icstgo8r/14713812978.pdfIn PDF document text
    • http://web68s.com/upload/files/gomogexolexexuzenag.pdfIn PDF document text
    • https://cremeconferences.com/wp-content/plugins/super-forms/uploads/php/files/514373a83e2f0d4ec78116964a1afd13/leribiludotepovi.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/9b57ca5dfa303e6ee013dfb70cc8dd10/xunujifuzukufe.pdfIn PDF document text
    • http://jar-ted.pl/file/mudimozalawobufesodu.pdfIn PDF document text
    • https://lolakarimova.uz/ckfinder/userfiles/files/87393579297.pdfIn PDF document text
    • https://www.cocochan.com.pk/wp-content/plugins/super-forms/uploads/php/files/4285679055bf4f8340bfc25c04c974e3/vekarupemuvede.pdfIn PDF document text
    • http://avondale61.com/clients/e/e2/e25739fb73bf6f2fbed92e75d980d6c5/File/59587668542.pdfIn PDF document text
    • http://conelser.hu/fck_uploads/file/bajelimuwunakix.pdfIn PDF document text
    • https://www.kalirich.com/wp-content/plugins/super-forms/uploads/php/files/21lmlnhs68pr8cjc1d3lnp30r7/limidesamuwefo.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/jokiqboshtfoa0nops0eqp7lm3/kitig.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160930604d31cc---juwajos.pdfIn PDF document text
    • https://securitydm.com/slicice/file/87310793475.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4424ef1a3b---zogibaliguvew.pdfIn PDF document text
    • https://emergent-partners.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088ece67a1d6---ragonozeruvaf.pdfIn PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c9155aeabe2---14011191742.pdfIn PDF document text
    • http://igorodstore.ru/files/userfiles/files/momasewolinaxab.pdfIn PDF document text
    • http://proxkimya.com/resimler/files/1731962025.pdfIn PDF document text
    • http://aceonlinementors.com/userfiles/file/16248519298.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1609db642e1f99---35974959045.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/7vo5qps88v4l2rt0cco32pca3o/doxajopiz.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c017.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC017 1276 bytes
SHA-256: 9baa35e22393b724efd4d116d1b3b366ed92172de8d34d466b563e2816cede3b
font_01_sfnt_off0000c76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76B 10952 bytes
SHA-256: e5b68aefb07e99c4bc1b6b4a6940b9502dea057d9cab2ce1a170074f1b1cbb36
font_02_sfnt_off0000e0ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0AC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off0000f8be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8BE 16620 bytes
SHA-256: ca662c85996a4615502ffb43310d213c7649fe1c6c49041e0466d1d59fde7e8d
font_04_sfnt_off00012408.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12408 17728 bytes
SHA-256: 2afa97e88fbc7a651f7a985d442007fe9732e7053172bbe8e12b73d95351e6f4

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