Malicious PDF — malware analysis report

Static analysis result for SHA-256 18e6592d2657b04d…

MALICIOUS

PDF

43.4 KB Created: 2020-08-09 18:03:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9fbf5b285c9ea41be81ddad5ff65e9c3 SHA-1: c204cecce5a633d064cd79f9331b7368f551a751 SHA-256: 18e6592d2657b04daecb32b92b4867c13920b88703450a37df409bf70043451c
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous links, many of which point to a redirector service that is known to host malicious content. The document body itself contains the primary malicious URL, suggesting a phishing or scam attempt to redirect users to potentially harmful websites. 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.cc/pify?keyword=business+enquiry+letter+format+pdf In PDF document text
    • http://files.swampscottfootball.com/uploads/1/3/1/4/131455463/fetabafa.pdfIn PDF document text
    • http://files.diversityunitkncirg644.com/uploads/1/3/1/4/131452735/gajonotawipalamovixo.pdfIn PDF document text
    • http://files.somebodyelsesjournal.com/uploads/1/3/0/9/130969371/siwefubitore.pdfIn PDF document text
    • http://files.eyelashogden.com/uploads/1/3/1/6/131636677/6b1a94a.pdfIn PDF document text
    • http://files.dangerforce.com/uploads/1/3/2/6/132682623/lalulikuzu.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/1/0441/3823/4008/files/12379664864.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5956/9055/files/sorumapifasomagu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6914/4230/files/taks_released_tests.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9542/5191/files/rumobopazob.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3314/1149/files/97144144638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/kaberusawesaxepid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/0083/7782/files/31875365414.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3259/2040/files/89174981342.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9732/5732/files/79344643514.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/5557/1353/files/41721934366.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5326/1724/files/26674178268.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_off00006b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B4A 5464 bytes
SHA-256: 3ea6cc147ad395637b1ced524f3618b15dd10749f19f6d46dd50dccc52be2281
font_01_sfnt_off00007dd0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DD0 10128 bytes
SHA-256: 700ad2e8ae43d6ad283c52c214041c97b859e85fcb0a3df3352669cafa498a2e

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