Malicious PDF — malware analysis report

Static analysis result for SHA-256 ec0426355217985c…

MALICIOUS

PDF

45.0 KB Created: 2020-08-11 14:39:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1c205941c4ee5926034056acc122c2fe SHA-1: ad865374785e27f389b88cbc4c75f44889ebd4fa SHA-256: ec0426355217985cc34bdfd82eeff438d0d5918c7b1ee2a1603884a2f971e222
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is disguised as a weight-loss guide. The PDF also hosts a large number of external links, many pointing to Shopify-hosted PDFs, suggesting a link farm for SEO manipulation or traffic redirection. The ML classifier strongly indicated maliciousness. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=a+positive+blood+type+diet+to+lose+weight+pdf In PDF document text
    • http://files.christykiespertpianostudio.com/uploads/1/3/0/9/130969110/wojugevifanenin_guduxamigevolaz.pdfIn PDF document text
    • http://files.centraleuropeanstringquartet.com/uploads/1/3/0/8/130814492/labumu_vokovexevaz.pdfIn PDF document text
    • http://files.groundtruthsalessystem.com/uploads/1/3/0/8/130874110/a5e3e96.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/1/0428/1021/2519/files/73897404410.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8946/1410/files/puwalopozaveditowasiwuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2442/4870/files/bedutavekibok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3193/6674/files/pavulenesuminoseresoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9898/6909/files/ackermann_s_formula.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7980/2782/files/nupizobeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6740/0601/files/19109536098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zenafepejeviwasi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9832/5671/files/bipote.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/vuzunorunogiro.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_off00007162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7162 5380 bytes
SHA-256: c07c94a97b6ff7df9eabcd275b8f4518247c97a6444c17f8c7eb216ea37ce083
font_01_sfnt_off000083bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83BF 10168 bytes
SHA-256: dd3e4c0931a345f15441bff6653d94d0d66bcd90375568febfa2831df07de8bd

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