Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cab5f369500aa91…

MALICIOUS

PDF

71.4 KB Created: 2020-08-07 02:38:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: c9ef004b1c19bf6d41ad514fb6653e15 SHA-1: ca841814cf11c560da2ec7cbaad3565d4005e895 SHA-256: 0cab5f369500aa91519615f97bcb44b9dbf2dac9e59b969afd274040004e9f1a
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to a malicious URL, identified as a redirector for SEO-based phishing. The document body, though heavily obfuscated, contains a reference to the malicious URL, suggesting an attempt to disguise the malicious intent. The ML classifier strongly indicates maliciousness, supporting the conclusion that this PDF is used for malicious redirection.

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=the+chosen+chaim+potok+pdf+free In PDF document text
    • http://sutenod.cherylmccallister.com/uploads/1/3/1/4/131453329/8980800.pdfIn PDF document text
    • http://files.moriskyscale.com/uploads/1/3/0/8/130874408/ruvamugenam-wajozamijipe-gufatidin-wetekegipamin.pdfIn PDF document text
    • http://files.ashlypianocrafts.com/uploads/1/3/1/3/131384173/8358062.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/1/0438/7130/5896/files/93209580382.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/65533522213.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2480/0154/files/ejemplo_de_acta_constitutiva_de_una_sociedad_cooperativa_mexicana.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9201/7305/files/98718713464.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6335/3244/files/nugujesisixulobulebivori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7701/8524/files/67827309113.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0533/6985/files/simple_present_tense_sentences.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2421/9288/files/26477581074.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9459/8047/files/butixefiderumapifeji.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9234/4999/files/6149850494.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2226/2178/files/15867439170.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD24 5164 bytes
SHA-256: aa777afd40c79d8ace4c6fdf4af91c7b6d4144280aa557d404573057cc2d6681
font_01_sfnt_off0000de7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE7C 10420 bytes
SHA-256: ffbb011414d8ac55f136705fc402194f0edd5bc74681a16be56d6b59483ce7a6
font_02_sfnt_off00010239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10239 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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