Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc79e490dc688bbe…

MALICIOUS

PDF

47.4 KB Created: 2020-08-06 11:48:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5b829379ee1da9e28657eb914880a311 SHA-1: 5c3075b4f622c287f7cf98c81e72e687de41c701 SHA-256: fc79e490dc688bbe2655964cd0be100d1f2518665a066d21ac0de3b8c20925b2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, ttraff.ru, which is likely used to obscure the final destination of the malicious payload. The document body, though heavily obfuscated, contains the same URL and references to 'pw atkins physical chemistry pdf', suggesting a lure to download further malicious content. The presence of numerous external PDF links also indicates a link farm strategy, likely for SEO poisoning to increase visibility of the malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.ru/pify?keyword=pw+atkins+physical+chemistry+pdf In PDF document text
    • http://files.techlitecorp.com/uploads/1/3/2/3/132302824/tukojuvojudiw-faxovotaliselim-japapawogamijal.pdfIn PDF document text
    • http://fizuzepiz.partainsenglishclass.com/uploads/1/3/0/7/130775732/4686999.pdfIn PDF document text
    • http://files.laniakeamedia.com/uploads/1/3/1/3/131380504/genakip.pdfIn PDF document text
    • http://files.heartfelthealingcounseling.com/uploads/1/3/0/8/130873822/xezibojes-fates.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/19085525902.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4655/2230/files/55247282922.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9033/7189/files/tapevigexo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3860/4450/files/55997473846.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5458/7288/files/bafarisexitisemowufib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9739/0244/files/42434911710.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8772/4704/files/54632820842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3099/4326/files/mitifowapof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3182/1468/files/b_ed_entrance_exam_2020_up_syllabus.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2771/0630/files/luzejepazibafaropomunu.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://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 5

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_off00005fd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FD0 5652 bytes
SHA-256: 9879c16328f16b5596386bb64e68aa0a4f5037558d42397ddb27a0e79ca8b2f6
font_01_sfnt_off000072fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72FC 10024 bytes
SHA-256: 3f571bda67557f73d88d2d3fd64e176555806d6346db63b19a023658ff273b70
font_02_sfnt_off00009566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9566 17900 bytes
SHA-256: 919bf99a8f6fa2c3ac70872e095e892753c9a9f5fb7faa34ff562d9d378bca4f

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