Malicious PDF — malware analysis report

Static analysis result for SHA-256 7fc106c1da72c1d8…

MALICIOUS

PDF

44.3 KB Created: 2020-07-31 10:36:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3bb995268c6824e56d24af979487dd55 SHA-1: 75e01b770ce1850e9759521119335dc88d3af898 SHA-256: 7fc106c1da72c1d89a4cf8359b12b45e451f9de403849136b932127e276d9e51
194 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with the primary one redirecting to a known malicious domain. This domain is part of an SEO link farm designed to lure users with deceptive content like 'graphic designer experience certificate pdf'. The ML classifier strongly indicates maliciousness, and the structure suggests an attempt to drive traffic to malicious infrastructure.

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=graphic+designer+experience+certificate+pdf In PDF document text
    • http://files.rayzinktattoo.com.au/uploads/1/3/1/4/131453177/korugiviwujepaseb.pdfIn PDF document text
    • http://files.rcmhistory9.com/uploads/1/3/1/3/131398432/gudebamim.pdfIn PDF document text
    • http://files.adventuresaroundscotland.com/uploads/1/3/1/4/131453395/wiladatu-poxuker-pefuk.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/1/0432/6916/1126/files/29155823611.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4790/1592/files/wikuzolatokobojopok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7665/8087/files/35231785955.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2358/8773/files/30678911157.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7702/6463/files/jukekuritajiwigogagaboz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/4393/6673/files/22775065076.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3683/4968/files/90814338631.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1010/4228/files/63488890895.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1548/7133/files/dipazutuxadokijekupixilub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0915/2936/files/23887034074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9879/1329/files/1760854539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7351/2359/files/gadakotevufebixujisutosa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8091/7926/files/levitolalawasan.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_off00007083.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7083 5160 bytes
SHA-256: 366a672294e071f42cb5853281c116bbab99c4644b80900b8d23b6c802534de2
font_01_sfnt_off0000820b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x820B 9908 bytes
SHA-256: dffe21147f808f8669d49ac3cf442da0be9be815e2b3181d4b64a28216c8bb6c

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