Malicious PDF — malware analysis report

Static analysis result for SHA-256 792c7f5ade2e367b…

MALICIOUS

PDF

41.4 KB Created: 2020-08-12 19:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 8f1c07635a3e7bdb777d7138f037da1a SHA-1: 7c42ce5a796ddfe21e839cd71c605f1cc9393660 SHA-256: 792c7f5ade2e367beb19c87e6fa21d6d6f86f227caa895b1990ba4ba25c367f2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links to external PDF files, presented as a free download lure. The primary link, https://ttraff.cc/wb?keyword=elementary%20principles%20of%20chemical%20processes%203th%20solution%20pdf, is identified as a malicious redirector, indicating an attempt to lead the user to a harmful destination. 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/wb?keyword=elementary%20principles%20of%20chemical%20processes%203th%20solution%20pdf In PDF document text
    • http://files.thecheekyparlor.com/uploads/1/3/1/3/131383772/2705247.pdfIn PDF document text
    • http://files.trojanpathways.com/uploads/1/3/2/6/132683330/mukigaxoduranifa.pdfIn PDF document text
    • http://foremojem.delissimobuntingford.co.uk/uploads/1/3/1/4/131454065/pokik-nufova-wupukowaf.pdfIn PDF document text
    • http://files.aligrovue.com/uploads/1/3/1/4/131453395/kifinowapu.pdfIn PDF document text
    • http://files.withhiminheavenlyplaces.com/uploads/1/3/0/9/130969184/rovatewe_virugu_vabaza.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/1/0452/1204/1367/files/benim_hocam_video_ders_notlar_matematik.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5064/8223/files/rikejepetipofokoveja.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0972/6888/files/26554584143.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6893/9672/files/keranejunezo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8052/4710/files/nawezovodoxubusigasinusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/6493/3014/files/talufukurukutugopa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3923/5997/files/karudenuremadu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7175/7718/files/libro_de_automatizacion_industrial_gratis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6360/6429/files/makkar_ielts_speaking_topics_january_2020_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/4432/8856/files/cbse_class_11_chemistry_textbook_download.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_off0000612b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x612B 5620 bytes
SHA-256: ea31acf21a7581cf6843461d304e0c73175b4ad52b92f0d013646da994212fff
font_01_sfnt_off00007419.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7419 11072 bytes
SHA-256: 52143fbccc494ec4bb6f130279ffdc33014ed411be1b3201821abca5de54c243

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