Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a0de34fd7904c6…

MALICIOUS

PDF

81.4 KB Created: 2021-01-03 07:52:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 16880c6f8acc467aff53b1f0060b1591 SHA-1: ed480e78ef6cdd6151ff86ad99f3317937cf93a8 SHA-256: c3a0de34fd7904c627fe6e00fdaa75f2152ec0a23bf87fe868507ccf767c52b1
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one pointing to a known malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • 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.
  • 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://traffine.ru/wb?keyword=radio%20commander%20game%20review In PDF document text
    • https://cdn.sqhk.co/kuruwoke/Kzig5id/fekofapolada.pdfIn PDF document text
    • https://cdn.sqhk.co/dejenuluzew/X3K7Uig/77640515353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370746/normal_5fc5a838780cf.pdfIn PDF document text
    • https://lufukosiresefo.weebly.com/uploads/1/3/4/7/134707539/a5d0cae7b7a5da.pdfIn PDF document text
    • https://cdn.sqhk.co/kezinujus/EhibWje/can_you_escape_50_room_2_level_22.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/zedilegol/sikisonavogifibelubovilu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5921069e-101b-4ce8-9a21-ee374e6456a8/street_race_fury.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da004093-2296-4e74-b97c-7367d7a3289b/crazy_games_seven_days_in_purgatory.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2fbd55a0-fced-47a5-9d1c-e5ab703e296d/what_does_fse_mean_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b303814-9c62-4fa9-bef3-aa0ce0ecb6f5/12796925407.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_off000102e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E5 5208 bytes
SHA-256: a68cbf0b2ab184d563bfd7e5ed63cfd79b79b21b81c210b883463eef06182450
font_01_sfnt_off000114a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114A1 10588 bytes
SHA-256: ed7b7562fe0edafb50e5ca8a91884521332cdde21b7b03bd3731297d5fe41a30

Open this report in the interactive analyzer, or submit your own file for analysis.