Malicious PDF — malware analysis report

Static analysis result for SHA-256 bfc3e425ecf3c5fd…

MALICIOUS

PDF

46.8 KB Created: 2020-08-05 05:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 15c354e3b22d100e6bad9a1194372ee4 SHA-1: a09aa9cc7624aa4e249349a44aeb057b7b73ba6e SHA-256: bfc3e425ecf3c5fdb9efdc217d8d57c18becc32cac7df06c30093348b447849e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded links, with a critical heuristic firing indicating it redirects to known malicious infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm designed to lure users into downloading more PDFs, likely as a phishing or malware distribution tactic. The ML classifier also strongly indicated maliciousness.

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=inductive+and+deductive+approaches+to+research+pdf In PDF document text
    • http://files.scqhaqueen.com/uploads/1/3/1/4/131482997/9211b29c54.pdfIn PDF document text
    • http://files.lifeistooshortnottobeirie.com/uploads/1/3/0/7/130775071/danot.pdfIn PDF document text
    • http://files.micahblackarts.com/uploads/1/3/0/9/130969469/f48031a5f6ef59b.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/1/0431/9019/0248/files/12440477255.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5715/1142/files/orthographe_du_francais.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4227/5485/files/3994392769.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/33765541260.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/10379968915.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0155/1771/files/xipujusuza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5783/9254/files/mudivewiw.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/4517/5971/files/breast_cancer_awareness_flyer.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0216/5410/files/forensic_accounting_and_fraud_examination_kranacher.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3825/2957/files/92322576919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7442/7806/files/sutaso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0441/1519/8104/files/32357828448.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/8954/9726/files/toregedejaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4646/1855/files/50777687913.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/96095801790.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
🗂 Part of campaign: 5degreespsychotherapy.com 3 samples

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_off00007985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7985 5208 bytes
SHA-256: 8af0c5412d27a16a71befbf7e089defeab566eea826e791ca6fbc4a64a2078cc
font_01_sfnt_off00008b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B43 10204 bytes
SHA-256: 01e14c100fcc57a327bc1eccae0a0b1b87c25a7cf361c608139ea1ff88ef7dcb

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