Malicious PDF — malware analysis report

Static analysis result for SHA-256 20371ab0da85c2bd…

MALICIOUS

PDF

39.2 KB Created: 2020-08-10 10:32:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 5673f1ba145819b906390c2f1ba376f3 SHA-1: a684e6b93d8fb6221acbd242f19e5a4f234cc689 SHA-256: 20371ab0da85c2bd6bc2c3b9d6e2a703dd180ff3e612233ef70eaecd7d1f53a2
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded links, with one heuristic specifically identifying it as a PDF link farm. The primary malicious URL, 'https://ttraff.cc/pify?keyword=anexar+pdf+ao+word', is flagged as a known malicious redirector. The document body, though heavily obfuscated, contains references to the URL, suggesting an attempt to lure users into clicking these links. The file's purpose appears to be the distribution of malicious content through these links.

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=anexar+pdf+ao+word In PDF document text
    • http://files.montanahphc.org/uploads/1/3/1/3/131384436/vaxigujemawad.pdfIn PDF document text
    • http://files.friendsofkibbuse.org/uploads/1/3/1/4/131437532/6946f457b3ef464.pdfIn PDF document text
    • http://files.azkillerbeessoftball.com/uploads/1/3/0/8/130874518/jemizip.pdfIn PDF document text
    • http://files.globalvillageschool.org/uploads/1/3/2/7/132710780/kikebawaxopad-babibudox-vilemibefu.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/1/0428/5287/6455/files/periril.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6574/5314/files/vobafimotaxezobudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48177964882.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2571/8678/files/75431251248.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0444/3809/3990/files/mergers_and_acquisitions_playbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3970/9605/files/16134686187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4327/3369/files/63062742770.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9461/3924/files/42542376834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7441/2949/files/76926669848.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xefafozerokadugatevaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4601/0022/files/68302782744.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9173/9295/files/20523445773.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/futikuzazojexopuvenewipu.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_off00005c9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C9B 4972 bytes
SHA-256: 358a53456c7c8b6fafecf6ab180ea2703662039f3688bb48d2cdb89be16b26b5
font_01_sfnt_off00006dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAD 10076 bytes
SHA-256: d6ae4e57211ed1aa44b7a44e3b9662d3794de909acfe839cf046fc24120676b8

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