Malicious PDF — malware analysis report

Static analysis result for SHA-256 55eee1067005355a…

MALICIOUS

PDF

45.2 KB Created: 2020-08-11 22:49:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: cb3239f89ef386aa8268ca71530fd499 SHA-1: 740810fafd26d73ee17614a4775c097e338d4f93 SHA-256: 55eee1067005355acd1b663d91ea5f2c425200b69892be8eb1c742d3af395495
194 Risk Score

Malware Insights

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

The PDF contains embedded links, one of which, 'https://ttraff.com/wb?keyword=team%20building%20proposal%20pdf', is flagged as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous other PDF links, many hosted on Shopify, indicates a potential link farm used to obscure the malicious destination. The ML classifier strongly supports the malicious nature of this PDF.

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/wb?keyword=team%20building%20proposal%20pdf In PDF document text
    • http://vafexav.poetart.org/uploads/1/3/1/3/131380005/miwarixijeg.pdfIn PDF document text
    • http://files.beitnachum.org/uploads/1/3/1/4/131483253/ximegigojepirez_rabisosip_suwupisi.pdfIn PDF document text
    • http://files.stephaniemclaughlinart.com/uploads/1/3/1/6/131606490/857271.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/93880590480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/6687/4266/files/gukiwaripedewiwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0294/3899/files/wiwebob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2198/4166/files/94280310345.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0360/8216/files/nifebadixibek.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3909/6986/files/2191520833.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/57393872030.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7767/2868/files/anisio_teixeira_livros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0505/1029/files/19685749436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9494/1603/files/40469000800.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4591/1709/files/xewero.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_off000072ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72ED 5452 bytes
SHA-256: 2f0ae26872c44f7ba258a3129c50986443b2debef99fa416858b1c40b0d40b8c
font_01_sfnt_off00008551.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8551 10064 bytes
SHA-256: d133e27e9727ab7bc9d26d288d8d0a2f728a633f02227b8bdc9659f3e03ebf5e

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