Malicious PDF — malware analysis report

Static analysis result for SHA-256 81b604c6c76ac5e7…

MALICIOUS

PDF

31.9 KB Created: 2020-08-03 13:01:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e0ae0a9fd606ffd66e8622ab0468d7e1 SHA-1: 06670af6b1e06dfd29e8be7600fefb76b2e92536 SHA-256: 81b604c6c76ac5e78f077aeea04dd51bb17d5cec01ff09244aa89bff64458634
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.com) that is flagged as malicious. The document body, though heavily obfuscated, includes the same malicious URL, suggesting a phishing or scam lure. The presence of a large number of external PDF links also indicates a link farm, likely for SEO manipulation or to distribute 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.com/pify?keyword=proses+diagenesis+pdf In PDF document text
    • http://files.jasonhalf.com/uploads/1/3/1/4/131437308/totanemu-sisebuwoxofifin.pdfIn PDF document text
    • http://files.actingcoachlasvegas.com/uploads/1/3/2/6/132681566/lejele.pdfIn PDF document text
    • http://files.underneathiam.com/uploads/1/3/0/8/130874646/povegorebowapuj-buvogigowisu.pdfIn PDF document text
    • http://files.longislandtu.org/uploads/1/3/1/0/131070469/715a7.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/1/0431/3592/6434/files/6965210923.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3340/3285/files/world_of_warcraft_rpg_monster_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4141/4552/files/tunoxoluramosexavar.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3955/3696/files/54308098947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/98127106322.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8866/7039/files/47824613008.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7680/5018/files/rulokidaxizow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4424/9499/files/sumibovewuxesalutapaku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0734/3772/files/ganalixebesolojinaxawul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5824/2470/files/rosikusepawogebo.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 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000041ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41BA 5176 bytes
SHA-256: 7b74440dfbe15445baebb0508ba8549f17651a2f36711d189742eb9ec7932f8f
font_01_sfnt_off00005364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5364 9328 bytes
SHA-256: 07b40d38704d3d182bbb0cfdc38f410d67c6b800f6767728b14f520ca10ba4b1

Open this report in the interactive analyzer, or submit your own file for analysis.