Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f1dfcaa36a62006…

MALICIOUS

PDF

57.8 KB Created: 2020-08-05 01:41:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cf289f092f0b96ac0432e3a007755306 SHA-1: a856710f13def93d7b34fb4798149d470161a18a SHA-256: 4f1dfcaa36a62006652a7abdc6d95730d59b4e4c2201bc5ac987d8273e460e5a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service (ttraff.ru) known for malicious activity. The document body, though obfuscated, contains the same URL, suggesting it's the primary lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a potential SEO link farm used to distribute malicious content or phish for credentials. No scripts were extracted, but the embedded links are sufficient evidence of malicious intent.

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=riesgo+relativo+y+razon+de+momios+pdf In PDF document text
    • http://files.armandwright.com/uploads/1/3/1/4/131437601/f6e9372eb.pdfIn PDF document text
    • http://files.gingerschultheis.com/uploads/1/3/1/4/131406248/8122546.pdfIn PDF document text
    • http://files.spotonseamus.info/uploads/1/3/0/9/130969999/wegewigemajoput_votivazinikejak_xojobizus_vawiwosepeki.pdfIn PDF document text
    • http://files.jasonshadbolt.com/uploads/1/3/1/1/131164210/nifunabekipupix.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In 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/1/0430/0449/3987/files/62494437691.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9472/8103/files/47761939884.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8184/3356/files/33676539904.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0736/0667/files/nitoxo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/zuxeraxaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9162/3074/files/sesirikuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1874/6013/files/kowejakuzokipuluvafaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7589/5450/files/pinusunupetema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1645/2258/files/sigabovovelalirolagujuw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7341/4055/files/benulikufosogasenuwized.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4647/8759/files/saxon_algebra_2.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0079/9140/files/wabefaniluf.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

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89F2 1604 bytes
SHA-256: 73b7f44e39bfa6d983a770ca4be90271880bb5d1867b4b39700504a0098866e0
font_01_sfnt_off0000920e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x920E 5368 bytes
SHA-256: 3375ca12c2bf9915de61407ab7a62932aa73152af31b65804eb82b7c1ccb36f9
font_02_sfnt_off0000a450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA450 11504 bytes
SHA-256: 2eeb09a20f84d37291b5e1ea651144907d6a128f84d3a5bba948a6b6c8b80b44
font_03_sfnt_off0000c9ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FF 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2