Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85aca3dd2cdb085…

MALICIOUS

PDF

38.8 KB Created: 2020-08-19 10:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 173b3fa73c805dcc4a00e2741bcbb9eb SHA-1: 27471cebb27ebf178beb37b391308875d8340681 SHA-256: b85aca3dd2cdb085b484294e146fe6ccf2cbdce48545f0ae349677e629782a7a
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, specifically 'https://ttraff.cc/pify?keyword=full+xl+fitted+sheet+cotton'. This link is presented within the document body, disguised as a product listing, indicating a phishing or malware delivery attempt. The presence of numerous other embedded links, many pointing to potentially malicious domains, further supports this assessment. The ML classifier also strongly flagged this PDF as malicious.

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.cc/pify?keyword=full+xl+fitted+sheet+cotton In PDF document text
    • http://bituxose.qbmusichub.com/uploads/1/3/1/4/131483453/afd652084.pdfIn PDF document text
    • http://zagemagub.purejoyfarmsmn.com/uploads/1/3/0/9/130969356/dd7d17bfd.pdfIn PDF document text
    • http://files.annparkin.studio/uploads/1/3/1/4/131453990/7037043.pdfIn PDF document text
    • http://jebam.cateringbyalma.com/uploads/1/3/0/8/130873851/givikum.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/1/0434/0373/9294/files/jujeselakat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1306/3327/files/gujodilepogifapugezufuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5062/2358/files/marketing_information_system_in_mis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0110/9920/files/liver_abscess_treatment.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2224/5273/files/82089399894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9072/2472/files/47828312336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1925/5454/files/56882890679.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0447/8697/4869/files/ss_pandey_sociology_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8062/9913/files/posulojomofinu.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 3

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_off00005af7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5AF7 4824 bytes
SHA-256: 1dc47ef8d52faed0170e2afe93f4f750f84650ba7539b2160f88ae4d22d3be2f
font_01_sfnt_off00006b5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B5B 10232 bytes
SHA-256: ee6112d12ab50c34f04a2b21be80d04867371743714a29fca9e27bb941038479

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