Malicious PDF — malware analysis report

Static analysis result for SHA-256 6785a781ed83125c…

MALICIOUS

PDF

46.6 KB Created: 2020-07-30 13:41:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 1cf5ab610c5e1651d77fea1763f24b78 SHA-1: e813795497dcbb2f699caf41bb37ff53877f0a38 SHA-256: 6785a781ed83125c94c0165ff6ba496355f5eae1437a9ebd71bcb9aa2405e4af
194 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating it's a malicious redirector, specifically designed to lead users to external links. The primary malicious URL identified is 'https://ttraff.ru/pify?keyword=berliner+platz+1+pdf', which is part of a link farm and SEO spam campaign. While no scripts were extracted, the PDF structure and embedded links strongly suggest a phishing or scam attempt, likely using a spearphishing attachment as the initial access vector.

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=berliner+platz+1+pdf In PDF document text
    • http://files.kingcountyexplorers.com/uploads/1/3/1/6/131636914/gerejilamasowibokan.pdfIn PDF document text
    • http://files.theuilanifund.org/uploads/1/3/1/3/131380128/gadigekamupole-dijodip.pdfIn PDF document text
    • http://files.delvera.org/uploads/1/3/0/7/130775049/funijutaxasi.pdfIn PDF document text
    • http://files.beebrighthives.com/uploads/1/3/1/1/131163561/bdf6e4d.pdfIn PDF document text
    • http://files.heavensentchihuahua.com/uploads/1/3/1/4/131413678/9801299.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/1/0435/7757/3539/files/sarunosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4267/6636/files/26043711027.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5702/9019/files/80892345761.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5331/8298/files/tevukipabaxuvuto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1586/3452/files/dilutoboro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2795/4853/files/89197965582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5189/0341/files/fijaraw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/8735843015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2177/0656/files/sefomukup.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2930/7296/files/rinatunokevajulexalowit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7193/0529/files/gogoju.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_off000077c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77C3 4684 bytes
SHA-256: 98e49836859b9edf4a417e9f5c790a3b09c44f84ddb3ec605bf058ccb8f00a53
font_01_sfnt_off000087b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87B8 11040 bytes
SHA-256: 34707305d99a01c6d769d3429724846f7f1aeae4f3e222d93611fd411bc01ad6

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