Malicious PDF — malware analysis report

Static analysis result for SHA-256 34ace32e24115942…

MALICIOUS

PDF

88.9 KB Created: 2021-08-12 02:52:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 444ace82126181f99ff8e684416a6ab9 SHA-1: 34c5f5cc05bb3a9fd6c6c47512db5f83f16824af SHA-256: 34ace32e241159420b96f5e6a2df991e382f11762a4c4fc1681fa228f803526d
156 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, containing numerous URLs pointing to various websites, some of which are hosted on compromised CMS platforms or disposable domains. These links are likely used to distribute further malware or engage in phishing activities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

Heuristics 6

  • 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.
  • 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://svx.su/ffile/file/tupuligikojedoxikodusota.pdf In PDF document text
    • https://www.grandeprairie.org/wp-content/plugins/formcraft/file-upload/server/content/files/160836dd8b10fc---68694289157.pdfIn PDF document text
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607181ad7bb2a---wojigigonufokuzo.pdfIn PDF document text
    • http://artpolinakuzina.ru/pict/file/lefepimalukem.pdfIn PDF document text
    • https://arerp.kr/data/file///34566940653.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16071197a76df2---piroluvubibi.pdfIn PDF document text
    • http://beiwendq.com//data/attachment/file/90267503940.pdfIn PDF document text
    • https://rhagro.com.mx/wp-content/plugins/super-forms/uploads/php/files/91c7d3ae95b8a8a5231eddbe72d65fd0/tuxujanivafowedeza.pdfIn PDF document text
    • http://chinalabware.es/d/files/67018690180.pdfIn PDF document text
    • https://spherule.org/wp-content/plugins/super-forms/uploads/php/files/3so4usl6qrsr4ofkmod5s0hpa5/panutadiwirax.pdfIn PDF document text
    • http://kirks-pool.com/wp-content/plugins/formcraft/file-upload/server/content/files/160842b3e75ef7---pogabopapeg.pdfIn PDF document text
    • http://conelser.hu/fck_uploads/file/takiz.pdfIn PDF document text
    • https://educationindiajournal.org/ckfinder/userfiles/files/kufufegoduvat.pdfIn PDF document text
    • https://www.infrascale.com/wp-content/plugins/super-forms/uploads/php/files/90bff947b00b9ef7b82c65125da696e0/wimizefamap.pdfIn PDF document text
    • https://ratsimae.ee/media/contents/file/pimudevufisanuxidigup.pdfIn PDF document text
    • https://bayardplaza.co.uk/wp-content/plugins/super-forms/uploads/php/files/mb4hrvba02kthsbg7vo1fv3ohe/70807317751.pdfIn PDF document text
    • https://habibitours.com/ckfinder/userfiles/files/72651933421.pdfIn PDF document text
    • https://www.eoluk.com/wp-content/plugins/super-forms/uploads/php/files/dbe8kqo6kjja9ti88m60jtlkce/55000920268.pdfIn PDF document text
    • https://dacinsara.ro/fckfiles/file/suselatibatapi.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6379aca8bd---28112578864.pdfIn PDF document text
    • http://palami.by/images/file/kanererotebebirubenozexo.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/9bdbeaae0bd2eeff6fbf9a05520192e5/mafobixaseni.pdfIn PDF document text
    • https://messianic.live/wp-content/plugins/super-forms/uploads/php/files/f4f9a1b1e979cb60d910a289641533a4/kazinadesiditenomomi.pdfIn PDF document text
    • https://jmtours.co/aym_image/files/wiparaxase.pdfIn PDF document text
    • https://zivotzaokny.eu/res/file/61762810813.pdfIn PDF document text
    • http://parvazyab.net/basefile/api203/files/82219908147.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/A3Ryygt5BCM/uplcv?utm_term=can+si+joint+dysfunction+cause+piriformis+syndromePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f688.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF688 11108 bytes
SHA-256: 1bb534e25721fb76a983d046ed05dad0c9707c06da87fe507734031f58aea60e
font_01_sfnt_off0001107d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1107D 17292 bytes
SHA-256: 5fe097cf595c4d3c874a59cea5d3038bacdfdf119a2e16136063a0a8e004b461
font_02_sfnt_off00013d93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13D93 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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