Malicious PDF — malware analysis report

Static analysis result for SHA-256 866bad4e716cfb98…

MALICIOUS

PDF

45.7 KB Created: 2020-08-21 23:27:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 25f2a6d149216687dbef46d593af400f SHA-1: 89983aaf0b0d5a4fd044b8f3d30a184db718f99e SHA-256: 866bad4e716cfb98ff247370f81f074a2b212f69ee80a16a71281175af183d0e
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector service (ttraff.com) that is associated with malicious activity. The document body, though heavily obfuscated, contains text related to 'Asbestos sheet standard size' and includes the same redirector URL, suggesting a phishing or scam lure. The presence of many external links, including a large number of PDF links, indicates a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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=asbestos+sheet+standard+size In PDF document text
    • http://files.bhurbanhillapartments.com/uploads/1/3/2/6/132683357/c3cc5d0.pdfIn PDF document text
    • http://files.washingtonstreetmedical.com/uploads/1/3/0/7/130739112/b57346.pdfIn PDF document text
    • http://files.cjstuf.org/uploads/1/3/1/6/131607027/wegijetasudisutad.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/1/0430/2045/1997/files/28316455561.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4624/8358/files/68938377762.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0450/9371/6121/files/goodbye_yellow_brick_road_sara_bareilles.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/5251/2918/files/16874477733.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1347/1384/files/buvori.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7530/4612/files/63627702369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0441/1556/files/pubazaxekopitegodulaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6309/1112/files/employment_legislation.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9501/4042/files/xivodaxigas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6856/3355/files/71385166643.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4070/0578/files/622753564.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/9218/9089/files/nagimitadefudejosopewif.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5847/0813/files/nodun.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_off0000748b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748B 5060 bytes
SHA-256: 441aa9ae003c68ec2f19a82063afdb8b12243de8de131a112c6160726e2c9bd9
font_01_sfnt_off000085af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85AF 10648 bytes
SHA-256: 67d1c18db4703fd4f0373e61dc749a4c62f5ffb9ecfb4d15dbd938f154179832

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