Malicious PDF — malware analysis report

Static analysis result for SHA-256 074625180d9ea01d…

MALICIOUS

PDF

69.3 KB Created: 2020-12-04 12:19:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 174e099de1063a2dcd11956fa1424748 SHA-1: deae8e1eeb641e634b025d46de16d8186e704e57 SHA-256: 074625180d9ea01d2e5f24c40b21e643c0a36471014103c08ce1267b5f8a09eb
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffnew.ru/strik?utm_term=fairburn+housing+authority.+org PDF link annotation
    • https://doxejukunalizep.weebly.com/uploads/1/3/4/8/134889306/8670914.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421036/normal_5fc47b546052c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wefadep/49023796171.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0c212c29-f19b-48b8-a229-b7ea323351fa/maytag_model_lse7806ace_manual.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0805cd49dd12447321748/t/5fc536cb9b1ed03538867a76/1606760140074/word_within_the_word_list_2_answers.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc338c4be9b69395119d659/t/5fc9f502d7c3040d873526a5/1607070978382/fuvipesegoxobesomakibo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc58d04cd1e280355f3c276/t/5fc6ad7e3485235c86b39727/1606856064128/ice_quest_botw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b845f11-89a7-4e8a-91ef-8997d95b341c/46803767795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ea6c9b8b-370d-4aff-a6e1-a94577586cbc/ralph_lauren_return_policy_sale_items.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bd24f5bf-5398-4b13-98c1-fddf9cf4686c/51297137013.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d152.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD152 5144 bytes
SHA-256: be7cf397987c3fe78d14330d79499e8a6b905f2044ffb83d73180104b39a6b7f
font_01_sfnt_off0000e2dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2DD 11092 bytes
SHA-256: 2dcbeafe06dde22dbe821f5ebc96db3a0bc36f79c1af4cde074efb296910b812

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