Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca7a5e9bb114b64…

MALICIOUS

PDF

42.5 KB Created: 2020-08-14 20:47:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d791d4734ce24b6db1b1fc0f362882a0 SHA-1: 210a2f12868175c39a825d7cb1eaeab8b3499ec6 SHA-256: 9ca7a5e9bb114b641ef6b982f356ab63b3037d8b4d0ff3945ce17c6009595e39
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a significant number of embedded URLs, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that points to a redirector service. This suggests the primary purpose is to redirect users to malicious content through a link farm, likely for SEO poisoning or to hide the ultimate destination.

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.ru/pify?keyword=father+berchmans+songs+free In PDF document text
    • http://files.movie-season.com/uploads/1/3/1/8/131856743/d9ab73a8352a9.pdfIn PDF document text
    • http://files.tridenthabitat.org/uploads/1/3/1/4/131454190/mosawej.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/1/0431/6299/2795/files/69420246052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1107/9317/files/vajoxag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3754/1031/files/53751824730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5129/4628/files/bebuguluvilil.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2103/1832/files/sotexomim.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9041/9616/files/suxarow.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4462/5813/files/bathroom_design_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5122/0134/files/3929041730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3070/8385/files/libro_alter_ego_1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nemevisofopanufu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0952/3355/files/gamoto.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E26 5356 bytes
SHA-256: b0eb3c8d84fb4f157f51691e69c736106a69e70190fb4356948c0698d7f70d2e
font_01_sfnt_off00007041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7041 13816 bytes
SHA-256: 7015cbfc47c0eec497aa14e44ecf04c829ec7487d7230edefcf85d9c04c194b1

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