Malicious PDF — malware analysis report

Static analysis result for SHA-256 2503b74f0fe33c4e…

MALICIOUS

PDF

43.0 KB Created: 2020-08-01 19:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: bc0eabf659620d94b00e055cbed58046 SHA-1: 2eba7fa3ecab47ea743b6515e49add6c3d4d42cd SHA-256: 2503b74f0fe33c4e54cbc8353e7645ccc5e4cb612d79c4805d0637de8b471f99
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, disguised as a search query. This indicates a phishing or scam attempt. The document body, though heavily obfuscated, contains the same URL and a reference to 'wkhtmltopdf', suggesting it was generated programmatically to host malicious links. The presence of numerous other Shopify links, many of which are benign, is characteristic of a link farm used to obscure the malicious destination.

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=can+you+refill+a+bic+lighter In PDF document text
    • http://files.earth.myworldrules.com/uploads/1/3/1/3/131380337/kudomusozigexu.pdfIn PDF document text
    • http://files.fleurspressed.com/uploads/1/3/0/8/130813757/voruguvepo_felimekurana_fenivulufawa.pdfIn PDF document text
    • http://files.evansmossfamilyreunion.com/uploads/1/3/1/4/131453724/9323432.pdfIn PDF document text
    • http://files.teachselfarabic.com/uploads/1/3/1/3/131379732/7382616.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/1/0430/4293/0842/files/voxenanatajavalep.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7316/6744/files/xaborevurilimamujuxisumas.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8220/3801/files/wowegumumilalopuwez.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3332/7776/files/resarepada.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/7411/7018/files/kayla_itsines_recipe_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0079/1191/files/59565350623.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0144/4512/files/2904948686.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1829/6228/files/nefawugagivufexibonovawed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sitomomuwarusubewikujo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/1234/1416/files/68772118934.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/sulepanulubipufebenolufet.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 3

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_off00006b3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3F 5112 bytes
SHA-256: d13dacea6367c0ae0c77f1b16d95a2ba5482cadf0d14ba688ea1a6aefac47a5e
font_01_sfnt_off00007ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CA8 10148 bytes
SHA-256: 415de9fb7a39032f8781b89d3ccfd2dc55d50fe1ad17b6a44386a2e55d0745e4

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