Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f31b70cb91d4723…

MALICIOUS

PDF

43.8 KB Created: 2020-07-31 21:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 35c0ce072e8b90bc0a955c4c60c09c5f SHA-1: 0add79edfa3718c58fc1e2f29f65e87524b37c74 SHA-256: 6f31b70cb91d4723d482259e8e59c012b9aba8a1d2c9cf6f112979b97cbb70a4
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 that is known to host malicious content. The document body, though heavily obfuscated, contains references to 'cheats' and a URL that appears to be part of a phishing or malware distribution scheme. The ML classifier strongly indicates maliciousness, and the presence of multiple SEO-linked redirectors suggests an attempt to distribute further malicious payloads.

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=axiom+verge+cheats In PDF document text
    • http://files.roots-to-health.com/uploads/1/3/1/6/131636807/9440039.pdfIn PDF document text
    • http://files.makwawamalawi.com/uploads/1/3/2/7/132740860/zuder.pdfIn PDF document text
    • http://files.globaltreasurypartners.com/uploads/1/3/0/7/130775557/4bcf6.pdfIn PDF document text
    • http://files.intensitycheeranddance.com/uploads/1/3/0/7/130776542/ranomalemutobedix.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/1/0437/6094/3258/files/badoputisokijegigemeta.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/9245/7112/files/151159444.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3954/5761/files/pisusuxililikexogax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4625/6295/files/99527909609.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5782/4419/files/33058673274.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4244/6231/files/78928113856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/20880330559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6019/1637/files/dojexusow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7664/9127/files/74914755020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/22411539251.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8298/1281/files/ditixilovijejinafese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0692/6741/files/bujozafavafitolakeledafe.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_off00006845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6845 5296 bytes
SHA-256: 213e9db2ad999906ece2e61f230fde66b2dad257042f3d0f6bb6b4a5123c40dc
font_01_sfnt_off00007a2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A2D 11816 bytes
SHA-256: a0f7d116da996964eb495d21f21290219d2492743cf9cb6d73a890cee9e8ffc2

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