Malicious PDF — malware analysis report

Static analysis result for SHA-256 62771f7b299bf1f9…

MALICIOUS

PDF

47.3 KB Created: 2020-07-30 05:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0650d3d8905c33d51891c8f88f0c2f10 SHA-1: 3c97c8f28ff2dd0adeb0075f88406c83c23adec2 SHA-256: 62771f7b299bf1f9e226b23164e67ab0a7372b73ab00f0bcd164dada6ee6ccfb
194 Risk Score

Malware Insights

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

The PDF contains numerous links to external PDF files, many of which point to redirector infrastructure. The primary redirector URL is `https://ttraff.com/pify?keyword=er%25C3%25B6rterung+schreiben+%25C3%25BCbung+pdf`, which is flagged as malicious. This suggests a phishing or scam attempt using a link farm to distribute malicious content or lead users to fraudulent sites. No scripts were extracted, but the PDF structure itself is used to host the malicious links.

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=er%25C3%25B6rterung+schreiben+%25C3%25BCbung+pdf In PDF document text
    • http://files.amcediting.com/uploads/1/3/1/3/131398091/467002beeb1474c.pdfIn PDF document text
    • http://files.rickverde.com/uploads/1/3/2/7/132740275/gejis.pdfIn PDF document text
    • http://files.differentshadesofcomedy.com/uploads/1/3/0/7/130738803/9894620.pdfIn PDF document text
    • http://files.carrolltonwindsymphony.org/uploads/1/3/0/7/130776033/5962480.pdfIn PDF document text
    • http://files.rankincreekcustomcycles.com/uploads/1/3/1/4/131407469/1246868.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/1/0433/9341/7366/files/gakowevan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/dusiguzavedasijufexinaw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8004/7010/files/91609599364.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mozinetesabelenigifil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4621/4564/files/tupelikosu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3827/6760/files/kadanujikiv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6223/0181/files/mibabubive.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7207/0556/files/84643148062.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/rovepuxibawawiguwekazapu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8117/9037/files/vedusiwugabofi.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 2

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_off00007737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7737 5300 bytes
SHA-256: 1be8e422fed8c6b6f4d8f5a53f6d3c0f90e72106bfa4904f492d05d2430f20c4
font_01_sfnt_off000088f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88F8 11392 bytes
SHA-256: aeda20497c210b38c1f622d13623c4651c6ea8b7d0fd32054d3ac6fbdbe26bd9

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