Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f03a41d6551a383…

MALICIOUS

PDF

42.6 KB Created: 2020-08-13 22:32:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 422248190fbd79a3bd2552f4be5096f0 SHA-1: d31bc857c623126c74829592a7e17d747a21ce76 SHA-256: 3f03a41d6551a383a5e44951eec57ecd274fb439e0790e2ac79a79e8222705c7
194 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. One critical heuristic identified a link to known malicious redirector infrastructure. The document body appears to be malformed or obfuscated, but the presence of numerous external links strongly suggests a malicious intent to redirect the user 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=anatomie+syst%25C3%25A8me+respiratoire+pdf In PDF document text
    • http://files.pacecoachingandwellness.com/uploads/1/3/1/8/131856569/4226514.pdfIn PDF document text
    • http://kikenale.rawfoodforlife.org/uploads/1/3/1/3/131398560/2290536.pdfIn PDF document text
    • http://files.hoperadio.ca/uploads/1/3/1/3/131384468/e06ffdc28656d4d.pdfIn PDF document text
    • http://files.calsafemovers.com/uploads/1/3/2/7/132740951/xisusabetafowanop.pdfIn PDF document text
    • http://files.tahoesacredvows.com/uploads/1/3/0/8/130874197/navakiwi.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/1/0433/9246/7109/files/different_types_of_analytical_balance.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3551/6318/files/welifogefuvozokinemudub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1384/7710/files/83721584995.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1997/files/2119718215.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7446/1589/files/56941140193.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7252/0352/files/fekirowatebine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/wavemo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3416/2853/files/cerebral_malaria_management.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6917/6985/files/zugagapavoxogiverifo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/jakidejowupokisopawegub.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0726/2370/files/coolmoviez_hollywood_movies_2016.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2508/8168/files/78963431812.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7351/9269/files/vifozolevokomon.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 3

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_off000064de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64DE 5388 bytes
SHA-256: 6716c5c14c48278bfaee9718ad967be00c0b96dcdec0a49765966ab5ca117a4e
font_01_sfnt_off000076dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DC 11520 bytes
SHA-256: 1a955db06eff989e57df62a6f62766ef959057ea0e7ab1bc86e5be07f100aee7

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