Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c0a006256214382…

MALICIOUS

PDF

44.5 KB Created: 2020-08-13 18:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3062a88c323bc5fe30699d0a97d5b259 SHA-1: fa12cf5584f1eba1f78291b12d153db9d3e5e390 SHA-256: 0c0a006256214382f79a7876854ff7b5e72db5b1a0c9ec1dfc35bbd83d077b86
194 Risk Score

Malware Insights

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

This PDF document employs a link farm and SEO redirection technique to lure victims into downloading further PDF files. The primary redirector URL is https://ttraff.cc/wb?keyword=formulas%20of%20physics%20class%2011%20and%2012%20pdf, which is flagged as malicious. The document body contains obfuscated text and a reference to the malicious URL, suggesting an attempt to disguise the malicious intent. The ML classifier strongly indicates maliciousness.

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/wb?keyword=formulas%20of%20physics%20class%2011%20and%2012%20pdf In PDF document text
    • http://files.fgfvegan.com/uploads/1/3/1/4/131453588/5de7d01bb.pdfIn PDF document text
    • http://lavavi.theknightshall.com/uploads/1/3/0/8/130814328/fapojazefep-daxos-rujome-kebaxomav.pdfIn PDF document text
    • http://files.concreteheritagemuseum.org/uploads/1/3/0/7/130739974/junener.pdfIn PDF document text
    • http://files.aphers.org/uploads/1/3/0/9/130969083/wavorizoxepumogak.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/1/0429/7474/0639/files/61354162550.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2214/0063/files/31109016458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/gamefidijuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6926/8383/files/gasaxeke.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4109/5834/files/36757903771.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1914/0253/files/fisojozororolezinimeso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6624/2710/files/10384307058.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0909/7376/files/feb_2020_calendar_kalnirnay.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/60418268634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8183/3379/files/74312391315.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/5037/5070/files/bovevujisakazitedebonib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0453/2648/files/86967179137.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/33540287451.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3882/5887/files/zupejiwixegegimodesosif.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 7

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_off00006e2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E2E 5636 bytes
SHA-256: 78738ab36eef23cedf15edbbd8702bdde25d3e913f9aa9f3ae39355c7a0bb14f
font_01_sfnt_off00008140.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8140 10572 bytes
SHA-256: ba2f595324bcd437f334e455dfda0c6f3f1dc22919b0bec913aa020039dc3d26

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