Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2ee36f479e295dd…

MALICIOUS

PDF

236.9 KB Created: 2020-11-19 06:15:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3eda523dd3acaab1b3e3eaa778a05ed7 SHA-1: d4149349b0a183751cd6496456ad956edcc912dc SHA-256: b2ee36f479e295dd14b6a4a8b928ee71f63c2da91e85c5d137e53fcc5ca711f7
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://gettraff.ru/123?utm_term=righteousness+as+filthy+rags+kjv'. This indicates the document's primary purpose is to lure the user to this external site. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence for a phishing or malware distribution attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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=righteousness+as+filthy+rags+kjv In PDF document text
    • https://nunigatomupava.weebly.com/uploads/1/3/4/3/134314222/bubakisakevokep-xatagixise-pejivigopipifu-lomojelux.pdfIn PDF document text
    • https://wovasemuzusalej.weebly.com/uploads/1/3/1/6/131636629/9627137.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bezorito/pegodupapusuxepalapumudi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83645766-eaf9-4400-9ffa-13bedb3bec09/honda_ryobi_2800_psi_pressure_washer_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jukoxisojow/back_stretches_lower_back.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9281e50c-53f6-40a4-903b-818587d1a29a/does_my_dog_have_a_broken_leg.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88f24b56-8e3a-4b56-a8da-91af002cc52d/89075284324.pdfIn PDF document text
    • https://s3.amazonaws.com/batoragubukepo/libetegosarum.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/laziwupufazububolupororu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ddfe460-8a0c-46e9-886b-bd4e0298b38a/davem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c144919-a600-4141-9496-03f2f26047d4/23713550026.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f3522a6-dea3-4a96-a5c4-cb3b77b247df/secret_societies_and_psychological_w.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00035e08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35E08 5220 bytes
SHA-256: 141ae410dca1377c95b4551dec6ec7ab2c590ad457295113c3c8ced1deaa2a00
font_01_sfnt_off00036fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36FDC 12064 bytes
SHA-256: 549bbacec3309603b48497e02ca9c165b8ad4b34f9660715f8849fa607a0a8d1
font_02_sfnt_off0003977e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3977E 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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