Malicious PDF — malware analysis report

Static analysis result for SHA-256 711a9c8cc4450948…

MALICIOUS

PDF

44.7 KB Created: 2020-08-26 16:46:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9acea3cb45f58e14bc8d022e42a2d366 SHA-1: c96d627176f03cde4b73373f0e20280046f29e10 SHA-256: 711a9c8cc44509484a8f6f5e148cae654757dacddbbdad7e26bae219466ad8ef
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing for redirector infrastructure. The document body, though heavily obfuscated, contains a URL pointing to a redirector, which is also present in the heuristics. This suggests a phishing or scam attempt using a link farm to distribute malicious content.

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=scythe+by+neal+shusterman In PDF document text
    • http://files.pollyadamssutton.com/uploads/1/3/0/7/130776054/290a8b03816bc57.pdfIn PDF document text
    • http://files.gwionraven.com/uploads/1/3/0/7/130739776/4916943.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5056/4773/files/economics_online_course_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0462/4374/1845/files/kozubepedunaponebuso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/livro_budismo_moderno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0556/6366/files/96975457113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9138/5758/files/jurnal_isoterm_adsorpsi_freundlich.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9005/9157/files/95842265515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/db_2013_pg_22557-_22559.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0448/9651/8299/files/sevuwuzegeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7548/6367/files/81993451390.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8309/4434/files/64008021348.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8801/1673/files/34903980539.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0240/4769/files/33503394109.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7997/5591/files/pizegudex.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 5

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64EA 5108 bytes
SHA-256: 666995e91ff317275f5762709b12faf6a499fddacbe40f0e994778cdc8445b40
font_01_sfnt_off00007612.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7612 9944 bytes
SHA-256: 3d7c0b3f33e00e391784ebcc85335b402ae35809d0b65fa4df0ad1c37c2a57e4
font_02_sfnt_off0000981a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x981A 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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