Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eb3dfd9241cef51…

MALICIOUS

PDF

46.3 KB Created: 2020-07-24 07:42:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: fc2e64f1cabc6309c89101345842d39e SHA-1: 456b6d2713925797663994b276d4123abbe71b40 SHA-256: 7eb3dfd9241cef51691c422f2470ae8a01c99fe9680f0271186812b00eb8b290
194 Risk Score

Malware Insights

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

The PDF contains numerous links to redirector infrastructure, specifically identified by the PDF_SEO_LINK_FARM and PDF_MALICIOUS_REDIRECTOR_LINK heuristics. The primary redirector URL is ttraff.ru, which is used in conjunction with SEO tactics to lure victims. While no scripts were explicitly extracted, the presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent, likely for phishing or malware delivery.

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/wb?keyword=didier%20stevens%20pdf%20tools In PDF document text
    • http://files.messinger-systems.com/uploads/1/3/1/3/131380337/8702632.pdfIn PDF document text
    • http://files.classiccutssd.com/uploads/1/3/0/7/130775107/50bfd155178eeda.pdfIn PDF document text
    • http://files.mrscooksbayhighscienceclass.com/uploads/1/3/1/3/131384771/jejolibavosurejir.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/1/0431/4506/8699/files/50327813813.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4451/1645/files/gadufupin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4168/5665/files/saripe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/kevaziretojigadogikoranab.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/5281/0911/files/95794299160.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/54313135065.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7083/2283/files/medexibakefapabiduza.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7901/6360/files/50740755287.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99324429390.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006f70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F70 4672 bytes
SHA-256: c0c44b2ba44d71cc5600992829247a2ed988758f459f99151c6df4859ea5ed9d
font_01_sfnt_off00007f5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F5D 1800 bytes
SHA-256: a36eee06fef6ce219692c4ec918276ac99413e4fd1e3666e4031624f9289d620
font_02_sfnt_off000087ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87EA 10540 bytes
SHA-256: 113bee5a919f6df66e65182e4a1f845e3d863f8afd34599e04b3af959814f43d

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