Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed55d769cd62f6da…

MALICIOUS

PDF

45.9 KB Created: 2020-08-15 11:35:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ba0f8be797f6f8939c4c13b0c2c888bd SHA-1: ee5985676c538625d3da42110b2c27c2e3b56fab SHA-256: ed55d769cd62f6da5504d45877c0cce7f19f8ff416d7d8e71a15ee4d2337b4cb
194 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many of which are hosted on Shopify and appear to be SEO-optimized lures for document downloads. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/wb?keyword=cv%20resume%20format%20pdf%20download%20free'. This suggests the document is designed to trick users into downloading further malicious content by posing as a useful document. No scripts were extracted from this sample.

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=cv%20resume%20format%20pdf%20download%20free In PDF document text
    • http://files.sigmax-yacht.com/uploads/1/3/0/7/130739783/7724510.pdfIn PDF document text
    • http://madit.yanktonspecialolympics.org/uploads/1/3/1/3/131398404/3240667.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/1/0431/1102/2756/files/gevotozebamu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9751/3381/files/nusep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7399/3890/files/kesumegixunoremuxu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0253/5840/files/40662465310.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2641/4748/files/52580540012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/0604/2013/files/kabamutibadudafof.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7121/7565/files/45885417321.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3110/9540/files/dobitobogovapaj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/98824415791.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000069ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69BA 5196 bytes
SHA-256: d5efa71b8f37c319d139f1a18c0ea9438df9595cc2ef1dbf222f28dcd5347fa6
font_01_sfnt_off00007b61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B61 9904 bytes
SHA-256: 1dd2f9f8b6821ec59bd812e68f2f01143981245e20719e74e7f90cfddffc0349
font_02_sfnt_off00009d35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9D35 4324 bytes
SHA-256: 781b9fae2fb9201b4a05d2041fea553bb2973f1d011ab9c51e3326c72e342c60

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