Malicious PDF — malware analysis report

Static analysis result for SHA-256 b66d16975f46a334…

MALICIOUS

PDF

37.9 KB Created: 2020-08-18 16:49:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ce0a283a182fa070cb415be0e1fb9e40 SHA-1: e967a0659b6fff2254c25fbf7e637c308494b1c3 SHA-256: b66d16975f46a3349c54909c15112b4e0f9a371b610b85703dcd2cf52b8015f8
194 Risk Score

Malware Insights

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

The PDF contains numerous links disguised as a financial reporting document, which redirect to a malicious domain. The ML classifier strongly indicated maliciousness, and the presence of a redirector link suggests a phishing or malware distribution attempt. No scripts were extracted, but the document body itself contains embedded URLs.

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=assessing+quality+of+financial+reporting+pdf In PDF document text
    • http://favik.honeycreekgoldendoodles.com/uploads/1/3/1/8/131856917/baxaxun-kasevelilobono-zidagexatumanix-najifuwu.pdfIn PDF document text
    • http://files.ansonexresources.com/uploads/1/3/0/8/130874073/21f9292d261118c.pdfIn PDF document text
    • http://files.parksidehighschoolfootball.com/uploads/1/3/1/1/131163666/dfbcc26.pdfIn PDF document text
    • http://pevuge.welcomehomebywendy.com/uploads/1/3/0/7/130739873/zupavavomarewetekub.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/1/0437/4216/7189/files/syndrome_de_peter_pan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1236/6229/files/wuzeximakelonekugosi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6443/3566/files/broodmother_dota_2_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4151/3894/files/what_is_com._ebay._carrier.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5790/5818/files/dopitakufisatotiwuwetogib.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5046/6471/files/limpieza_de_sangre_libro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1734/6965/files/zadolenaxenixufakawa.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/69954900919.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9413/8268/files/annotated_bibliography_apa_example.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5039/2984/files/33397295272.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4241/4493/files/majelabevitamigexowoga.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6124/7129/files/ffxiv_blacksmith_guide.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_off0000550c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x550C 5540 bytes
SHA-256: db991f0db536a372806e3f40361177337c242193ce1355f175634462c5f7fc15
font_01_sfnt_off000067ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67EA 10192 bytes
SHA-256: 9289d988b79911e3ca3af38d1e88fa2c4f935dccbffcca43ce5a3eace9fd9654

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