Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc1434be327af444…

MALICIOUS

PDF

50.3 KB Created: 2020-07-31 02:24:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6f89f89fd0bfaa75a3251a532c55b2fe SHA-1: b295b6d72e78aa3962b2c189b6033ebaf5bfae83 SHA-256: bc1434be327af444eb8affb6df05e7ed79d57905f08b8f2d53959d25334e8f11
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link T1059.001 PowerShell

The PDF contains numerous embedded links, with one critical heuristic identifying a link to a known malicious redirector at 'ttraff.com'. Another heuristic indicates a mass external PDF link farm, suggesting a SEO poisoning or link farm tactic. The document body, though heavily obfuscated, contains text related to 'Aicpa ethics exam pdf', likely a lure. The primary attack pattern involves redirecting the user to malicious infrastructure.

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=aicpa+ethics+exam+pdf In PDF document text
    • http://files.heritageschoolofdiscovery.com/uploads/1/3/0/7/130775145/9742970.pdfIn PDF document text
    • http://files.abcdts.store/uploads/1/3/2/6/132681878/84c5aa99f.pdfIn PDF document text
    • http://files.keribaskin.com/uploads/1/3/1/4/131454355/3071001.pdfIn PDF document text
    • http://files.ashleyparsonsyoga.com/uploads/1/3/2/7/132740415/newixebomufobezofawe.pdfIn PDF document text
    • http://files.nikkileahdesigns.com/uploads/1/3/1/6/131606231/juwidu.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/1/0427/8334/2748/files/728313151.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8733/0464/files/54450167490.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/tiwibewapizut.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/fosesatonetokevob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9961/9492/files/rezunuf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6482/8838/files/kumaliwonigofasig.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2100/1119/files/nojed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5525/9560/files/sirifinurigokin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/8180/8549/files/menit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0100/4707/files/61410823458.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9074/8316/files/soxafil.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 8

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_off000087db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DB 4896 bytes
SHA-256: 37eb49c245a8b7e6e6d76dddd822e9be985c23666ab98256ccce457ba2901f78
font_01_sfnt_off00009889.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9889 10516 bytes
SHA-256: 600e4dda4f4ac9f8c62d13b5d3882fba343b3c9835e7ec88a9a6ab37fa3b095a

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