Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35267a619d7168d…

MALICIOUS

PDF

38.3 KB Created: 2020-08-07 20:08:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 556a9056769e9e8d58818d4582de1132 SHA-1: 7e37df8e47f9451fc755a17ec15076ba463f5047 SHA-256: e35267a619d7168d2a8d64381d0d0629e034eaa447866156410c1f956982d8f7
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, including a critical redirector link to traff.com, indicating a link farm or phishing lure. The document body, though heavily obfuscated, contains references to academic material, likely a pretext to encourage link clicks. The primary malicious URL is https://ttraff.com/pify?keyword=cambridge+english+empower+a1+teacher+s+book+pdf, which is a known malicious redirector.

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=cambridge+english+empower+a1+teacher+s+book+pdf In PDF document text
    • http://files.loukobin.com/uploads/1/3/1/4/131452750/1882643.pdfIn PDF document text
    • http://peleza.allisontaylorphotography.com/uploads/1/3/1/0/131069839/tavam.pdfIn PDF document text
    • http://files.wingecarribeehealthassociationformen.org/uploads/1/3/2/7/132740905/dorulex.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/1/0432/2862/7107/files/balanis_antenna_theory_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4217/7181/files/css_center_vertically.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2965/8790/files/52993935720.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5930/5880/files/javascript_random_number.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/pirerenikuluxonefexamul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/6449/0149/files/tinkle_magazine_free.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2805/4169/files/70395385779.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9532/6887/files/91541261525.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gaxedisurerikemamezawapux.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9883/9970/files/forero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8873/9494/files/ribbon_in_the_sky_piano_sheet_music.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/laludesubidol.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 6

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_off00004a2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A2C 5728 bytes
SHA-256: 4105f522d743ed1d9e2f8085aad86805cb996d6c541f67468b2f23829ad0ce64
font_01_sfnt_off00005d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D8E 9544 bytes
SHA-256: 30c9b6b5591a4cbee695276167aed81187b1799d14e9ff8393a091f223f57d58
font_02_sfnt_off00007dfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFE 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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