Malicious PDF — malware analysis report

Static analysis result for SHA-256 038136db2a673606…

MALICIOUS

PDF

68.7 KB Created: 2020-11-25 08:25:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 46edf98c57180c81c55cd82a23a9cfc0 SHA-1: 585d0887328e0755d5b365b2007b340884d73930 SHA-256: 038136db2a6736068eb85c4f9ee341df019f55da0dbeecd659e19ad9e667a5a6
214 Risk Score

Malware Insights

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

The PDF contains multiple embedded links, with one identified as a malicious redirector. The heuristic firings indicate a link farm designed to direct users to potentially harmful content. Although no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to exploit users through deceptive redirection, aligning with phishing or malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://gettraff.ru/123?utm_term=ruger+single+six+holsters+for+sale In PDF document text
    • https://nidobafimenute.weebly.com/uploads/1/3/4/5/134526671/2bb14.pdfIn PDF document text
    • https://bapoxaluw.weebly.com/uploads/1/3/4/7/134717037/4117077.pdfIn PDF document text
    • https://mesovozilepako.weebly.com/uploads/1/3/4/5/134588792/deset-wotuvetedezez-kusokudibegu-maginid.pdfIn PDF document text
    • https://litabunor.weebly.com/uploads/1/3/4/5/134522775/gegoreb-zokawolilu-difegenakesot.pdfIn PDF document text
    • https://mexugagerow.weebly.com/uploads/1/3/4/4/134482965/7599982b12bd5.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/wisuw/unblocked_games_for_s.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cf53a36-08f2-41b2-9428-0628f99c5d9e/corel_painter_essentials_5_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/anycast_m4_plus_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fukepez/8130975059.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_off0000cd38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD38 5104 bytes
SHA-256: c372e66187c0f7a8d5d69a28a32d8d6e93af45aae15c2a37749f220f4820b907
font_01_sfnt_off0000de9c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE9C 11668 bytes
SHA-256: 2f0c4ecd2c067054564aab1611f5e25ba6a407d12c04292e2ed9d7485300f549