Malicious PDF — malware analysis report

Static analysis result for SHA-256 764d97d421f01c10…

MALICIOUS

PDF

64.4 KB Created: 2020-12-27 04:33:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 6aaceaf9893813ad28aa5a1ff1c12079 SHA-1: 995c0072e86a0bf3d508d426390c9c13828d01b5 SHA-256: 764d97d421f01c10b1a4680d613cc027c8722533b7b596a003a72fc3ce39529c
104 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'trafficel.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF format and the nature of the detection suggest potential exploitation of PDF vulnerabilities or embedded malicious content, possibly JavaScript, to achieve its objective.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://trafficel.ru/123?utm_term=the+seven+spiritual+laws+of+success+epub PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4487632/normal_5fb3cf332fd09.pdfIn PDF document text
    • https://cdn.sqhk.co/vexedobasof/C0ngjjg/nujegozokov.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451375/normal_5fcdaf019ca7d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5741cc5-fbae-422b-9e6d-dfc853937033/crash_course_ap_world_history_book.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0718f0a2-7d0d-4bd9-9a8d-1327ef6eede5/nojirefulajizominewulosa.pdfIn PDF document text
    • https://s3.amazonaws.com/vonuxagupeduze/73827519326.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f70d50b2-6e21-4856-9942-ba822c055e6b/fivomuzogagugenim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f870b935-44dc-4f8a-b7ea-d2f9a93a6f19/35565661109.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d3637cd-3757-49e4-ac78-5bcc7420e159/boards_and_beyond_books.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_off0000be38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE38 5344 bytes
SHA-256: 016ffaba2a81e6cafb93568456bfd9ee272cb616db04a75e12d993b1aff287c4
font_01_sfnt_off0000d070.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD070 10676 bytes
SHA-256: 18153dfe13d145432698c1fd19597e81dd93c9e6ab710ac2664c89328b311bfe