Malicious PDF — malware analysis report

Static analysis result for SHA-256 da28626eb6b0ef36…

MALICIOUS

PDF

50.3 KB Created: 2020-07-29 17:56:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-07
MD5: 0bd950389a23db721c3a03401c3d5c6e SHA-1: fc3b5ce57eddd64adf362ab4bc0d528849696d81 SHA-256: da28626eb6b0ef36636c41b8a1a7318e0ea9b6033f555b7cbf43f5ba19e4cd9b
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a lure related to a 'vehicle bill of sale pdf filler' and embeds numerous external links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=vehicle+bill+of+sale+pdf+filler, which is likely used to redirect users to a harmful site. The document also utilizes a PDF SEO link farm strategy, embedding many links to Shopify domains, one of which is https://cdn.shopify.com/s/files/1/0432/7967/9646/files/lomawolamakuj.pdf, likely as part of the SEO spamming effort.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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=vehicle+bill+of+sale+pdf+filler In PDF document text
    • http://files.positivefocushawaii.com/uploads/1/3/2/7/132710627/3737546.pdfIn PDF document text
    • http://files.theyogasocial.com/uploads/1/3/1/6/131637374/fidorekijedu-lamutofimojemor-josidufalo-nifed.pdfIn PDF document text
    • http://files.ontherealfilm.com/uploads/1/3/1/8/131871720/6b416d9f3f18.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/1/0432/7967/9646/files/lomawolamakuj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5586/5243/files/batobuwe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3692/5342/files/widusuwazetat.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2766/8890/files/46842331571.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/49726552648.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3325/5323/files/gewaves.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8833/9361/files/senasidezididedo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/4436/4710/files/zifuzaxonilonikigu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2391/7478/files/8329468696.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/zebegevuda.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/fakuwonilojovaxibudebu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7811/3697/files/tafinegiw.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 5

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_off000088da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88DA 4952 bytes
SHA-256: e5d34bf7c910657ed5ec8bfb5efe227ef8a514655e761f9a15a550906a8e872f
font_01_sfnt_off000099ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AD 9944 bytes
SHA-256: 2e80003f12c55a5af7ffe1c8ed419d25ff4d0deb2779728206f2f7ab57c88438

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