Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2ab482e71c79fad…

MALICIOUS

PDF

37.7 KB Created: 2020-08-16 13:55:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bfae0390b374d5596a964761a1cb1d5c SHA-1: 37cf6335a83ff9a14d55dd71457e78040a42effb SHA-256: f2ab482e71c79fadfab07f34550312d6cb400a95b7b7ca6dc9b74ccbf2525470
194 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with redirector infrastructure or potentially malicious content farms. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=acls+algorithms+pdf+heart+and+stroke', which is flagged as a malicious redirector. This suggests the document's primary purpose is to redirect users to malicious sites, likely for phishing or malware distribution.

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.ru/pify?keyword=acls+algorithms+pdf+heart+and+stroke In PDF document text
    • http://files.lepopupusa.com/uploads/1/3/1/3/131398131/ac37b7.pdfIn PDF document text
    • http://zukuriri.highwaywalkers.com/uploads/1/3/0/7/130738799/530648.pdfIn PDF document text
    • http://nifazak.outoftheboxfamily.com/uploads/1/3/0/7/130739173/sezapigogu_fewafimovex_vagabuxin_pigofutipi.pdfIn PDF document text
    • http://files.kalbproject.com/uploads/1/3/1/8/131871390/vuzexevonovigam.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/1/0431/1734/6965/files/62410824685.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9763/6512/files/29956018436.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/40133843423.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/3612535262.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1450/4093/files/fuvemigozilodejodi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5187/6509/files/dofirosebimuxibupefafenew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/rexalomofovuwazeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/9313/8333/files/36243010236.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7076/6750/files/jspdf_autotable_rowspan.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5564/3813/files/wamuxamox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4521/5656/files/41823544004.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 4

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_off0000531e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x531E 5624 bytes
SHA-256: 897f7e67ad8e733244aec14e9c42aa9556a3f3102321e21deec089aad5bb9573
font_01_sfnt_off0000660e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x660E 10628 bytes
SHA-256: af02dbe38abaa95fe6a05e170c4d94ec4ed46538208ef6fd32ccf109b201e8db

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