Malicious PDF — malware analysis report

Static analysis result for SHA-256 a65fa5d925f427a4…

MALICIOUS

PDF

35.5 KB Created: 2020-08-11 01:00:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 32b0eaa41ee5d12dcc13fb02cb665b67 SHA-1: b7b30bad4ea51b5da6bf85508c12a62856c267e3 SHA-256: a65fa5d925f427a47e2fbff961bef7b015ab3d9a9fbf017539a9ebf0cb559f6f
194 Risk Score

Malware Insights

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

The PDF was flagged by multiple critical heuristics indicating malicious redirector links and a link farm. The ML classifier also strongly indicated maliciousness. The document body contains numerous URLs, with one pointing to a known malicious redirector. This suggests the document's primary purpose is to lure users to malicious sites.

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/wb?keyword=qcm%20glucides%20pdf In PDF document text
    • http://rivuw.fabloranhairology.com/uploads/1/3/1/8/131858540/eef9ad.pdfIn PDF document text
    • http://tigeposiv.lakesareaminiatureherefords.com/uploads/1/3/0/9/130969335/revipariga.pdfIn PDF document text
    • http://files.committedcommunitymentors.org/uploads/1/3/1/8/131871730/02911e44baaa.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/1/0428/9003/5366/files/36751542478.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4845/9673/files/zebamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2317/8656/files/21381931582.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2865/9880/files/ginulage.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2819/3184/files/31068063111.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8956/7650/files/77870848856.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2873/2314/files/tuzopuvefuka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6246/8503/files/87291136015.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/3177/9733/files/84056013337.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4405/1864/files/29473971945.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2431/7596/files/ragijegerovoseg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9610/4348/files/lanegawozulexukigimofezif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5980/5350/files/41943537216.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5362/8062/files/60363328245.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5496/4631/files/wowupakoda.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_off00004a10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4A10 5232 bytes
SHA-256: 8fb031c8e95b1c905744d108b661710c290114b9e321285c58f78bdb6b0abe7d
font_01_sfnt_off00005bd4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BD4 11344 bytes
SHA-256: ad56e56db9ac80dee1d3cd0c3f64978c41f94bb77af91933ef220a552ddd06fd

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