Malicious PDF — malware analysis report

Static analysis result for SHA-256 185ac167764d3eae…

MALICIOUS

PDF

41.0 KB Created: 2020-08-25 00:46:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 220d419e7f2ff029d41779109a740d81 SHA-1: f393016703be7cf3aef938175c9c413b52dffb41 SHA-256: 185ac167764d3eae85cb5bf69fdeef0df8769edcfc24c5e5760367dfdaad49ca
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many of which point to a redirector service known for malicious activity. The document body, though obfuscated, contains the URL 'https://ttraff.cc/pify?keyword=def+model+answer', which is also flagged as a malicious redirector. This suggests the document is designed to lead users to malicious content, likely for phishing or malware distribution.

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=def+model+answer In PDF document text
    • http://dofenede.trade-genetics.com/uploads/1/3/1/4/131437987/517b17891b44ac7.pdfIn PDF document text
    • http://zifogofep.mandiware.com/uploads/1/3/1/8/131856827/33b9cfe1.pdfIn PDF document text
    • http://files.sspoolsolutions.com/uploads/1/3/1/4/131453248/gefibavujuvuwif.pdfIn PDF document text
    • http://files.designby-faith.com/uploads/1/3/1/1/131164202/golixil.pdfIn PDF document text
    • http://rekolabof.throughthewoods.net/uploads/1/3/1/3/131381241/jimib-kedivupa.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/1/0433/8535/6449/files/zelerekuwituv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7572/1629/files/target_lawn_chairs.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/8783/6822/files/badmashi_karo_karo_video_song.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3730/1653/files/606144995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3605/7501/files/30817465792.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4211/9592/files/my_dream_house_paragraph.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/39225082265.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/8442/1022/files/python_string_replace.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5802/1027/files/95854397987.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8056/3350/files/lasanenotepero.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2670/2758/files/dugab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/notadenagefajofakiwu.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 4

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_off000062ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62CA 5144 bytes
SHA-256: c2fb22fc69b1b51012d4d0a4eaec7e4ec9cb287670d8faeccc3d0fce8361a539
font_01_sfnt_off00007448.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7448 10180 bytes
SHA-256: b5206622f2567b5fd9022d64b67a90039c8db595fd9c57c036ccad195effc696

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