Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f0c0992573be87e…

MALICIOUS

PDF

48.6 KB Created: 2020-08-03 20:51:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: eb05a30fcc1d6253089c2861a7f564a3 SHA-1: 2d1016c4731895cd82ee6858624f675668353108 SHA-256: 3f0c0992573be87e8525150319558a6b12a4a59fe36e226f9a3f6630c75f7121
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The document body, though heavily obfuscated, contains text related to 'Toxoplasma gondii in pregnancy' and includes the primary malicious URL. The presence of a link farm and a malicious redirector suggests an attempt to drive traffic to potentially harmful content.

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=toxoplasma+gondii+in+pregnancy+pdf In PDF document text
    • http://lemapon.lifeandinsights.org/uploads/1/3/0/7/130739309/kukipowomudevir.pdfIn PDF document text
    • http://files.babbiemuseum.org/uploads/1/3/1/3/131381607/gobemi-monowenipalemox-resite.pdfIn PDF document text
    • http://files.arlingtontherapyalliance.com/uploads/1/3/0/7/130775197/luvoluw.pdfIn PDF document text
    • http://files.mechuwana.org/uploads/1/3/2/6/132680796/juwogesedafaxipari.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/1/0428/0942/6079/files/97208353136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5548/7905/files/babexebezipifivowalasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2068/1377/files/76852571596.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/53295895336.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/3329/7058/files/zanazuveruroxis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3401/0015/files/12951998257.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3626/8949/files/el_budismo_tibetano_esencial.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9948/0473/files/rikijesu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/1942/6198/files/79662082482.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0484/5465/files/51936368774.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/76102764406.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_off00007ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FF6 5596 bytes
SHA-256: e4f8121a1682b8bffbd2c32db446650d045bff0cc24160c0e0bcc5ac23b6d926
font_01_sfnt_off000092f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92F4 10212 bytes
SHA-256: 838dffc77e3ba5a5c285e7c3978298e705eee4726116d740fbfe7c65185528f6

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