Malicious PDF — malware analysis report

Static analysis result for SHA-256 acb193ae259846c7…

MALICIOUS

PDF

64.6 KB Created: 2020-08-08 07:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3ff8e539e6a99d58c96f46b7797bbc1b SHA-1: 6b65d395f22a0b0cf932b8dc7c1045dc67a71749 SHA-256: acb193ae259846c7d4d4bbfe02538ac49bb1e8818fe8f25113dea52aab0f556b
194 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link leads to a URL that is part of a link farm, suggesting an attempt to manipulate search engine results or distribute malicious content. The primary malicious URL identified is https://ttraff.com/pify?keyword=bernoulli+s+theorem+pdf+download.

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=bernoulli+s+theorem+pdf+download In PDF document text
    • http://files.staceysherman.net/uploads/1/3/0/8/130874338/1904488.pdfIn PDF document text
    • http://files.misohandmade.com/uploads/1/3/2/6/132695519/f6b208f9cd.pdfIn PDF document text
    • http://lojojijip.dixiehighcounseling.org/uploads/1/3/1/4/131452883/0d31b7ee7a.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/1/0428/4016/2467/files/75583763266.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/letowopebofowebizuwir.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4202/8182/files/nalaseratunovunupo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3431/9776/files/metoxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/83390791822.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3758/1734/files/gikapetisivaromozemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9624/3364/files/wezojusujomelusomej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5920/6561/files/wapeguj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9387/6118/files/descendants_3_audrey_s_diary.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0243/7527/files/canales_de_distribucion_gestion_comercial_y_logistica.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/7217/6799/files/fijisururo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0761/4882/files/julepariwumix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zimupumunilojoduwa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9094/3904/files/bumekigisedinowemimopi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4528/1183/files/11556458677.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 1

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_off0000b6a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6A8 5424 bytes
SHA-256: a5dade301acbdb25a4b9bc0995e2f2c0730f79097d98b3b686d9c6d686578848
font_01_sfnt_off0000c900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC900 13712 bytes
SHA-256: b637157ccbf1a25575770dc405a1b6016d4f91ef5222258b5fd5031eb6cbd5b0

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