Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa86623512d71b4c…

MALICIOUS

PDF

71.3 KB Created: 2020-12-15 03:22:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 17ad4bb2a03f14cf75e6226728fbf891 SHA-1: 14d29733ff25f0508d9edafde25d7890a4c8b8eb SHA-256: aa86623512d71b4c32c63afeb85bac3185c14eadca8755db62c933f1f54b0e49
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URLs point towards a phishing lure, likely attempting to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 4

  • 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.
  • 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=bourbon+red+turkey+poults In PDF document text
    • https://bogekivusuwi.weebly.com/uploads/1/3/4/6/134604255/riletitepolenusatusi.pdfIn PDF document text
    • https://turakenedonatup.weebly.com/uploads/1/3/4/6/134610331/sidukubu_foxow_zilalegumikagop_dijife.pdfIn PDF document text
    • https://lifotuvuzaraxur.weebly.com/uploads/1/3/0/7/130775275/suzepapiwupe.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/fizufapu/xulivamer.pdfIn PDF document text
    • https://s3.amazonaws.com/bibejovixapis/brighter_than_sunshine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13c4eb34-f924-41b4-ae48-5aa4f5f42b5f/the_tipping_point_theme.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98157222-3dfc-4558-bfe3-73ed5299decf/lozizuverirevibuvudafu.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/lutovododanenegiku.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/mckelvie_middle_school.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/wukowaweguwogizatedalavep.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_off0000dc97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC97 5100 bytes
SHA-256: e3cd84c6f3c998d32452d00b0f327238b5d908542e5fbaa2396d02fd3bf54f9b
font_01_sfnt_off0000ee04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE04 10248 bytes
SHA-256: 38031733876f6cb5f6d504307d8fc2a41e9c1335e6f6b4827e4d3981c0f63dab

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