Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dd1ee17cb285d54…

MALICIOUS

PDF

99.4 KB Created: 2021-07-04 18:24:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 2acf6ff576a310ee008a405df130b27a SHA-1: a2093bef0b75589267b1e2cc815156f84056dd24 SHA-256: 7dd1ee17cb285d543a8321853c627f1a5297747451b0245b6b632176e93f95e0
216 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing or trojan threat. The document's content, though heavily obfuscated, is strongly indicated by heuristics to be a lure for recovery secrets or private keys. The presence of numerous external links, many hosted on compromised or disposable domains, suggests an attempt to redirect the user to malicious sites or download further payloads. No scripts were extracted, but the overall structure and heuristic firings point to a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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.
  • 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 http://lws-realestate.com/userfiles/files/duvapovug.pdf In PDF document text
    • http://harringtonandlombardi.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/jaradafufelevozujowo.pdfIn PDF document text
    • https://banghenails.com/upload/file/96586672958.pdfIn PDF document text
    • https://acethamessecurity.co.uk/wp-content/plugins/super-forms/uploads/php/files/d9e0efafaee3487b5db539409c65d86b/mepumeviw.pdfIn PDF document text
    • http://tropo-design.com/ckfinder/userfiles/files/72805757611.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/1f610608c2e037485bf8dd97ec939d83/3905973313.pdfIn PDF document text
    • https://alignerco.com/wp-content/plugins/super-forms/uploads/php/files/6d1213a458bf40b5adf8dbcd2e37d8c2/fovopibuvezegel.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/latazelure.pdfIn PDF document text
    • https://tipresentoio.it/images/file/boradasosegerewixasuzis.pdfIn PDF document text
    • http://candientushinko.com/images/file/wuvevixado.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/a06451cc952a73aee21ba413a83b7538/pemiwogipapisarij.pdfIn PDF document text
    • http://kimwendelldesign.com/ckfinder/userfiles/files/buzomunad.pdfIn PDF document text
    • https://www.webplease.it/wp-content/plugins/super-forms/uploads/php/files/v5rjuj19jm3tcukdeqpg6nq8m8/43673978326.pdfIn PDF document text
    • https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/oqlf1195lee8c6qqu1ets0j7fk/83385130777.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/16073bd3d9f597---3801241165.pdfIn PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/2d827ca92ec8fed2a8e9a1ee524a7fe3/wovelidumalutipoputet.pdfIn PDF document text
    • https://tavio.ru/files/file/4348594905.pdfIn PDF document text
    • https://led7.ru/file/74899730915.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d8d17722ab---21048572552.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aac6cc95db8---79527605313.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/dc7b9b823d99ea7a8d78439f154955d1/18864943458.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=history+of+cryptography+and+cryptanalysisPDF link annotation
    • 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000118e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x118E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000130fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130FA 20836 bytes
SHA-256: 041ab81ccfe23c8d5576155c9bfd7c7a478f11e524aeb602e6615598d4fe83ea
font_02_sfnt_off00016609.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16609 10872 bytes
SHA-256: 9e8645af01df4e1dd5816e860b14f183924f47e4684e49a9c4f668126ff83801

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