Malicious PDF — malware analysis report

Static analysis result for SHA-256 6cfbc4162764472d…

MALICIOUS

PDF

37.9 KB Created: 2020-07-29 17:51:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 9835c75d1adb31bb4ae252673f5913e6 SHA-1: d022cbc24b058b2277d8207d9e7c7a21a3375b11 SHA-256: 6cfbc4162764472ddaee1f6671721af591db1f3683e7a433f91c49e58e651f03
194 Risk Score

Malware Insights

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

This PDF document is classified as malicious due to its use of a link farm and redirector infrastructure. The document presents a lure of a coloring book to encourage downloads, but the embedded links, such as 'https://ttraff.com/pify?keyword=l+anatomie+%25C3%25A0+colorier+pdf', lead to known malicious redirectors. The ML classifier also strongly indicated maliciousness, supporting the conclusion that this file is part of a phishing or malware distribution scheme.

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=l+anatomie+%25C3%25A0+colorier+pdf In PDF document text
    • http://files.hometankservice.com/uploads/1/3/1/4/131453060/4174197.pdfIn PDF document text
    • http://files.studiokfit.com/uploads/1/3/2/8/132814048/xunixorada-kisopep-dexasuwufusos.pdfIn PDF document text
    • http://files.markvillemassage.com/uploads/1/3/0/9/130969085/jetobewalogavifa.pdfIn PDF document text
    • http://files.travelblogonline.com/uploads/1/3/1/1/131164488/5477405.pdfIn PDF document text
    • http://files.drkentpsyd.com/uploads/1/3/1/4/131438248/bumorenoxewavup-xizenu-bejinab.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/1/0428/9835/8432/files/puneson.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/2698/7680/files/namaveku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/55742160690.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5106/5243/files/kuzuwagixivutufivopodu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/27482348981.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4399/5298/files/27358811531.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8070/4405/files/zofuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5802/7928/files/28792890459.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6925/0463/files/puwonev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8862/5316/files/xolozofinuwasawevideneg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4411/9462/files/45083080290.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1690/3080/files/8260315645.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
🗂 Part of campaign: asiaticofusion.net 3 samples

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_off00005757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5757 5084 bytes
SHA-256: af707cbd355e139e1c9a0d7d325bc5337b3959b5e88ed0f5c6637e5213d2b058
font_01_sfnt_off000067f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67F4 10080 bytes
SHA-256: b3c30bb588aecee420e6bb472c77924386db65e907f98cf035a24f9bd283f6ca

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