Malicious PDF — malware analysis report

Static analysis result for SHA-256 a3c6a014c460baf0…

MALICIOUS

PDF

43.8 KB Created: 2020-08-21 01:46:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3779e69f7595799d7a63aafa1e1cbc9e SHA-1: fb90acfde0daa9ed2bc2f8bc06baa24973477506 SHA-256: a3c6a014c460baf03182a2fef9474bb217c6daf165c173babcd1955c432fc09d
194 Risk Score

Malware Insights

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

The PDF contains embedded links that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text referencing an 'Audi q5 2016 instruction manual' and the malicious URL, suggesting a lure to trick users into clicking the link. The ML classifier also strongly flagged this PDF as malicious.

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.com/pify?keyword=audi+q5+2016+instruction+manual In PDF document text
    • http://sunofij.practicegracenow.com/uploads/1/3/1/4/131453723/janimet.pdfIn PDF document text
    • http://files.almamusicstudio.com/uploads/1/3/1/4/131409693/2c72f055d632c0.pdfIn PDF document text
    • http://zitavito.aftercareusa.studio/uploads/1/3/0/7/130775493/9425927.pdfIn PDF document text
    • http://kesex.ivanazivic.com/uploads/1/3/2/7/132710712/fapuzevir-narotaralanafoj.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/1/0429/3555/0118/files/sevufizovenevenorak.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/nezasoku.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7274/8710/files/75188374173.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3009/3728/files/53041646752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0316/6370/files/rubudurusafasevabobusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5417/8216/files/46762103954.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3531/1775/files/derivumedigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9937/4236/files/ferikikepixin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7728/0671/files/ribokaba.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9141/8526/files/tusinokemuto.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_off00006bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BC5 5804 bytes
SHA-256: 73979a58c8d5e2df39894c67d607770229c71a7a22dc8d1418e6312267b0f01d
font_01_sfnt_off00007f64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F64 10180 bytes
SHA-256: 1ebe7d454c217012b996526ff53117d10826407fa0561eca288c2be4851255a4

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