Malicious PDF — malware analysis report

Static analysis result for SHA-256 756139f44769df32…

MALICIOUS

PDF

40.1 KB Created: 2020-08-02 22:30:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ecfce888e94ae8f3e3ee9961d7cf3b9b SHA-1: 40968bd228bef019fd7bbc2d35e3564063449688 SHA-256: 756139f44769df32ea60445fa54e527cdcb80ee264e9d8216a5e7427e8b24ab4
194 Risk Score

Malware Insights

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

The PDF document contains embedded links and text that lure the user with a 'free VMware license key'. The primary link directs to a known malicious redirector, ttraff.ru, which is likely used to host further malicious content or phishing pages. The document also exhibits characteristics of an SEO link farm, with numerous links pointing to other PDFs, potentially for traffic generation or to obscure the malicious redirector.

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=vmware+license+key+free In PDF document text
    • http://files.america1funding.com/uploads/1/3/1/6/131637257/6963183.pdfIn PDF document text
    • http://files.abookstudio.com/uploads/1/3/0/7/130740255/fugeduvevepo_dozutazi_wuxiki_rerozesifeja.pdfIn PDF document text
    • http://files.catonsvilleptsa.org/uploads/1/3/1/1/131163943/47aef3c.pdfIn PDF document text
    • http://files.fightroom.org/uploads/1/3/0/7/130775350/zajirufelapisize.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/1/0434/6124/7129/files/xuxefasirijafaturoribuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7098/8188/files/sixodibizuwotudodepuvided.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1682/2692/files/bexexeti.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7539/5993/files/ford_repair_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2143/4005/files/9830336730.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5126/1853/files/78935308634.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5038/5051/files/gejaf.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8255/5297/files/mavaxusefeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8026/9477/files/tafixu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/kajetadaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3121/5780/files/liguwugazixejawud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6579/4969/files/13201078683.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_off0000567c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x567C 5252 bytes
SHA-256: c5f0d1210f16f46d9b035e7ab910ae8e2def3876ed5884dc7d4fd3c0629644ef
font_01_sfnt_off0000685a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x685A 13692 bytes
SHA-256: fa1f49e168ec4334c0442d39ba7ffc7ec5ae8d8166d348fc65f6f0db993ddba7

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