Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b43596932e698ba…

MALICIOUS

PDF

33.3 KB Created: 2020-08-17 05:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: b6a341e017a5a44744a6e59cec2811da SHA-1: 4628a54bbf606c026a48c364e3986c81cfb14157 SHA-256: 6b43596932e698bab0040f08114c47e53873d163534df3b5e59e80140359cceb
194 Risk Score

Malware Insights

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

The PDF contains a link farm and a redirector URL, both pointing to malicious infrastructure. The document body, though heavily obfuscated, contains the primary redirector URL and mentions 'Crash bandicoot android emulator', suggesting a lure for potentially unwanted software or malware. The ML classifier strongly indicates 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=crash+bandicoot+android+emulator In PDF document text
    • http://files.crispusattucksalumnilettermen.com/uploads/1/3/0/7/130740391/wapenitodebi.pdfIn PDF document text
    • http://files.sitesofpassage.org/uploads/1/3/1/0/131071240/455213.pdfIn PDF document text
    • http://files.caribbeanpsyarts.com/uploads/1/3/1/4/131437987/0c470a891690c1.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/1/0431/2137/7434/files/41623474369.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1121/0398/files/zidexoso.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6648/3103/files/24961708657.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/13160390395.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9993/8211/files/english_dictionary_pronunciation_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/57955619809.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/6302/4542/files/16223384719.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/8580/0358/files/rawenibabaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0443/8360/0806/files/anarcho_syndicalism.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6961/1930/files/juwenerudugix.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_off00004492.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4492 5224 bytes
SHA-256: 64ef876483445874b682544c9640aa9de5f78475e7b14b02644205ae45e1226a
font_01_sfnt_off0000561c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x561C 10060 bytes
SHA-256: bfa8df0d6d2f331ca97ee3b3f2267dad46415adeb8416159eba31acaf6432bf3

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