Malicious PDF — malware analysis report

Static analysis result for SHA-256 0253c1b7e825985f…

MALICIOUS

PDF

47.5 KB Created: 2020-08-20 13:58:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: aa219d239dbe14eed4a5a9108cfe4f25 SHA-1: 560696e113f183b5c159fed0cef611a6a17a096f SHA-256: 0253c1b7e825985fd3c13bd3c2b7d197410bea20a1167ae40c994d21afaa7262
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains multiple embedded links, with a critical heuristic firing indicating it points to known malicious redirector infrastructure. The document body, though partially obfuscated, contains the same redirector URL. The presence of a large number of external PDF links, many pointing to Shopify domains, suggests a link farm or SEO manipulation tactic to disguise the malicious redirector.

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=authentication+mode+forms+in+web.+config+mvc In PDF document text
    • http://religa.alexblassingame.com/uploads/1/3/0/7/130775934/varuvurak.pdfIn PDF document text
    • http://files.carescoasters.com/uploads/1/3/1/8/131871977/8329494.pdfIn PDF document text
    • http://bulij.slovak-tourguide.com/uploads/1/3/1/1/131164250/6516701.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/1/0440/9245/7112/files/apple_s_mission_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/8680/5147/files/impossible_quiz_2_walkthrough_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1773/8152/files/48881572136.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/9918/4551/files/31449475499.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9455/7351/files/alternative_dispute_resolution_mechanisms_in_nigeria.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5917/3790/files/iata_airport_codes_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2650/5128/files/17392403218.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/94229011204.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5497/1557/files/99995462048.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_off00006de8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DE8 5716 bytes
SHA-256: 6f3cb97f0f28ad45d824b2013c146c3ea60b3ec1d546404ee9d51522b3355152
font_01_sfnt_off00008143.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8143 15440 bytes
SHA-256: 49c59e5998925b5f077ccc1d92aa8b5729967d50fd4c7342ed0816e9ed44b544

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