Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab865301d641990…

MALICIOUS

PDF

45.9 KB Created: 2020-07-31 11:19:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9c9df2eb8224c8fb5a6ee9badf6c66bb SHA-1: a22d75c17ca6748236edb282a7a58ba1a47addbc SHA-256: 6ab865301d641990c5c028f24a2a5ebddf41ead537a3dc18c25927eecd8dd682
194 Risk Score

Malware Insights

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

The PDF contains a link farm and redirector pointing to a URL that mimics a chess strategy guide download. This is a common lure for phishing or malware distribution. The ML classifier strongly indicates malicious intent, and the embedded links suggest an attempt to drive traffic to malicious infrastructure.

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=seirawan+play+winning+chess+pdf In PDF document text
    • http://files.trodgerscourses.com/uploads/1/3/1/6/131637723/6426603.pdfIn PDF document text
    • http://files.newmuses.com/uploads/1/3/1/4/131437249/jumegapovadu.pdfIn PDF document text
    • http://files.kentuckianaelderlawadvocates.com/uploads/1/3/2/8/132814371/c650e73.pdfIn PDF document text
    • http://files.mikenixonart.space/uploads/1/3/1/4/131437724/5b14bfc53a9.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/1/0441/3744/7576/files/fopofadisunutoxatod.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0867/1394/files/xopapilel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/9991266254.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9118/2243/files/55375439947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1034/2564/files/64986768089.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7046/3912/files/10922551302.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0587/8173/files/14709960970.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8288/4006/files/finugazepuxuxulorowi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1687/1333/files/21055185.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6705/7063/files/61557271431.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2210/6271/files/25118357234.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2158/3004/files/tinozifusul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/52733892229.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_off0000754f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x754F 5312 bytes
SHA-256: 0b8fd3da8ffbcd4119dbc9c2df4b9b907fbf71d77c6c4c940772ac876a4fb191
font_01_sfnt_off00008759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8759 10180 bytes
SHA-256: fc9d3274b6cb2efd1b585d68fab040c25bcd860c410461739ae26cbdf07cf0a5

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