Malicious PDF — malware analysis report

Static analysis result for SHA-256 cbd4db68c0d162c1…

MALICIOUS

PDF

41.6 KB Created: 2020-08-01 18:04:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 94241a28ba597b17c5e983ec75e65bea SHA-1: f8444458ee601b19abf652d7223f3ca951673651 SHA-256: cbd4db68c0d162c1803698fbcd7d218982098d6746e41e06ba4ddcdba8dc9ee8
202 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link pointing to ttraff.ru, which is associated with malicious activity. Additionally, it hosts a large number of external PDF links, many of which are hosted on cdn.shopify.com, suggesting a link farm or SEO poisoning attempt. The document body itself contains text related to converting PDFs and includes the malicious URL, further supporting the lure. No scripts were extracted from this sample.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=how+to+convert+pdf+into+fillable+form In PDF document text
    • http://files.troop11billerica.org/uploads/1/3/2/8/132814241/6077598.pdfIn PDF document text
    • http://files.hempsteadtrackandfield.com/uploads/1/3/1/3/131381204/7079214.pdfIn PDF document text
    • http://files.somafirewellness.com/uploads/1/3/1/4/131454034/fifofilek-gejawixalezuxu-vazeludabavijim-bipapenekuvifow.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/1/0435/9307/2808/files/dudufaxusi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/3328/8088/files/16154058196.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/7880/9755/files/pinuzurop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1633/1172/files/nutigazifufavigifaros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8421/0583/files/wipimodipugeg.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/derosejudov.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7437/9164/files/vevikovuvagape.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/50547330627.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5113/8715/files/93584802704.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/1760/0152/files/37386732218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/3711/1973/files/76948238232.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 7

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_off00006390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6390 5376 bytes
SHA-256: 3cc2bcf468fe526e0384385a681a4004da789dfefa33ea33bcff7986e1d2fc64
font_01_sfnt_off000075d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75D6 10560 bytes
SHA-256: 37d9f58bca93bd2d3bad1f3ce2bfae91e6125f118afc3cc5285c7f1cf6fbe38d

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