Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9a0823d1f8698fe…

MALICIOUS

PDF

51.2 KB Created: 2020-07-29 19:11:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d2d3d2c25a5446175f3581ee90b361cc SHA-1: 267c136f134f2e3200d51ffa763373c2375d865e SHA-256: a9a0823d1f8698fe36ee6c0d14211f4ceb618f789a575b7a41fbec2ac8f72544
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains numerous links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, suggests a lure related to negotiation or legal documents, aligning with advance-fee scam tactics. The presence of a link farm further indicates an attempt to distribute malicious content or engage in SEO abuse.

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=batna+in+negotiation+pdf In PDF document text
    • http://files.aramgershuni.com/uploads/1/3/1/0/131071289/8864926.pdfIn PDF document text
    • http://files.risingravenband.com/uploads/1/3/1/3/131384018/buvab.pdfIn PDF document text
    • http://files.dc3cares.org/uploads/1/3/2/6/132695749/47fa023c4.pdfIn PDF document text
    • http://files.thesquirrelloversclub.com/uploads/1/3/0/8/130874075/8404938.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/1/0433/2634/1278/files/saxewazuleraxusim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0133/9304/files/nerebobisevejodinu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gizuvesadumewagetikuxumut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8333/3786/files/18863723818.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6387/8566/files/kalobezisedexexurixuno.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8681/4109/files/zofabevomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/34007074416.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7105/2707/files/33708222589.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8646/2620/files/fobedatozinukejamoxekora.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0163/3177/files/sobukeli.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8059/7152/files/bixuvil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rerotapok.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8334/2748/files/lazowedoxakodujimovopajod.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007c5b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5B 3904 bytes
SHA-256: 04b2a22b6da4b5ed769fad359c026547790890fb473754a19ff556ac42f79858
font_01_sfnt_off00008a32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A32 4740 bytes
SHA-256: 742856e28652758243fade222bef269fa25d58db5e865fb1c735ac7dab05e5d0
font_02_sfnt_off00009a64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A64 10700 bytes
SHA-256: 96f14d67643c8329dd5f1c10bb263aef066327ed0a81d38a7e6144392f73c73a

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