Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cda07f13dc7d62…

MALICIOUS

PDF

70.6 KB Created: 2021-01-15 14:19:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cb0e40a74a4bdd6f5892aa7024fe98a5 SHA-1: af77ec1a65e7f9f119f03ea451e2173b869ad9d1 SHA-256: 14cda07f13dc7d624c906825b2007133d7d8798150de5fc5e52ece462c22dacd
156 Risk Score

Malware Insights

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

The PDF document contains numerous external links, identified as a link farm, designed to redirect users to malicious websites. The document body text, though obfuscated, includes a URL that appears to be part of a phishing or scam campaign. The presence of multiple external links and the ClamAV detection as Pdf.Phishing.Trojan strongly indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=hamsters+for+sale+omaha PDF link annotation
    • https://site-1168131.mozfiles.com/files/1168131/5805507016.pdfIn PDF document text
    • https://cdn.sqhk.co/fabozesemi/gh7oiRq/47903262796.pdfIn PDF document text
    • https://cdn.sqhk.co/lituxopevuk/wWlidHw/49991285265.pdfIn PDF document text
    • https://cdn.sqhk.co/vupapevixu/Tjg4Rhf/slicer_knife_size.pdfIn PDF document text
    • https://dikurowewo.weebly.com/uploads/1/3/4/8/134893632/vatamugefubarox.pdfIn PDF document text
    • https://site-1171866.mozfiles.com/files/1171866/25361832339.pdfIn PDF document text
    • https://site-1178444.mozfiles.com/files/1178444/fishdom_new_levels.pdfIn PDF document text
    • https://site-1173136.mozfiles.com/files/1173136/doodle_jumping_cow_2018.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/geradi/bovixefe.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/barberton_ohio_police_accident_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/xapidajovaji/nofugal.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuzo/tiwosotamarafi.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_off0000d42f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD42F 4968 bytes
SHA-256: 135373b092bc589a38be938c8272ab657d4632791b5b2b1c42994814e585f7f2
font_01_sfnt_off0000e4e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E2 12904 bytes
SHA-256: fab9bbf39d5a813641a18456c416ececd0eaef3697f626ac8261b7c17b19aa8a