Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc959770b1b37940…

MALICIOUS

PDF

46.0 KB Created: 2020-08-17 16:03:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 816ab2f86ccfead043ab7ef97bcafd46 SHA-1: b39d48ed4397ffe220b84882c62c96802afb4c2d SHA-256: bc959770b1b37940abe0e2760b8e27db4064d3ac2b1972fd26b916466050df3d
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.ru/pify?keyword=website+article+format+apa'. This URL is presented within the document body, suggesting a lure to trick the user into clicking it. The file also exhibits characteristics of a link farm, with numerous embedded links, many pointing to Shopify domains, likely to obscure the malicious redirector. No scripts were extracted, but the presence of a malicious redirector is sufficient to classify the attack pattern.

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=website+article+format+apa In PDF document text
    • http://files.daphnesdetails.com/uploads/1/3/1/3/131398351/modipa_sefamilif_femagekivuw_xurofumolikab.pdfIn PDF document text
    • http://files.froghappy.com/uploads/1/3/2/7/132741322/2010b7b9d8e2.pdfIn PDF document text
    • http://files.hocorespond.com/uploads/1/3/0/8/130813489/6422239.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1085/0979/files/3018870409.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6779/3820/files/holy_bible_in_arabic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4586/2041/files/levomojawez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/63064057931.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9902/1731/files/anatomia_y_fisiologia_del_ano_y_recto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48675385277.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1851/0745/files/19976822663.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5651/2680/files/fekuzajolatujujomozuxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6622/8898/files/45058486425.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1452/6888/files/classical_trumpet_solos.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/69363433638.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

Related samples 7

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_off00006912.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6912 4996 bytes
SHA-256: 7977a7ecf956f3cf042db526acfc28c82af3a9240ac781c37888edafe785e23d
font_01_sfnt_off00007a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A10 10120 bytes
SHA-256: 93ffdfba3b13d95f9996df55152822c6a1d4d9f3fd58c1d62d2c00d3ab084660
font_02_sfnt_off00009cbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CBE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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