Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc51e9d00dda59a…

MALICIOUS

PDF

59.1 KB Created: 2020-08-23 05:59:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 602e124dfebf99ff20b913268e293b1a SHA-1: dad058f1584c5cd63bbaafa6c28e5a5dc14bb5d9 SHA-256: 9dc51e9d00dda59a1331d8bee583573da71dde1ecfbb3b919ba2e5e07070b128
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is disguised as a 'legionella risk assessment template'. The document also exhibits characteristics of a link farm, embedding numerous external PDF links, many hosted on Shopify. The primary malicious intent appears to be directing users to the ttraff.ru redirector, likely as a step in a phishing or malware distribution chain.

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=legionella+risk+assessment+template+for+offices In PDF document text
    • http://files.emaportfolio.com/uploads/1/3/0/8/130873838/zesosutebojex.pdfIn PDF document text
    • http://files.merwininsurance.net/uploads/1/3/1/3/131381900/9017042.pdfIn PDF document text
    • http://files.caringwithoutboundaries4u.org/uploads/1/3/1/8/131856498/kanoguwagawojemulofo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0437/0992/3493/files/intermediate_financial_management_10th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5344/9365/files/friendly_letter_template_5th_grade.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3704/6437/files/video_maker_app_pc.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1387/2548/files/89563165834.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4645/1862/files/59003071209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6633/6166/files/limofopiwororuzoka.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/2733/1232/files/billionaire_casino_hack_mod_apk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8549/6482/files/86084321017.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 6

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_off00009cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9CEE 5128 bytes
SHA-256: 9e01859e9f23c6b08cad8ccb3d28639d261a820b9b9d8bb1ef51bf2b3248919f
font_01_sfnt_off0000ae4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4C 10076 bytes
SHA-256: d4e72503cc98fe280ec0f85c5f855b10769f12db375bcada3a7bdd004271729b
font_02_sfnt_off0000d0ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BA 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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