Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0de597493bf3d56…

MALICIOUS

PDF

72.7 KB Created: 2020-11-17 06:53:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 3dddcbb00631172aa3db631d0cb8df53 SHA-1: cb813411f16b027923a23fe2182652311c818157 SHA-256: e0de597493bf3d560c9a84bc41f588f25740f2ddcd99f5c2eae2bbab74274391
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains an embedded URL pointing to 'traffking.ru', which is likely part of a phishing campaign. The document body, though heavily obfuscated, appears to be related to academic material, suggesting a lure to trick users into visiting the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

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
  • 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://traffking.ru/123?utm_term=diffusion+through+a+semipermeable+membrane+lab+answers PDF link annotation
    • https://bowukobi.weebly.com/uploads/1/3/4/7/134706413/7d4d98b486f8c.pdfIn PDF document text
    • https://vuxarujetununo.weebly.com/uploads/1/3/4/4/134437765/e49b1df.pdfIn PDF document text
    • https://wubobuxidozexe.weebly.com/uploads/1/3/4/3/134322977/vusodipopadedin.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/4cc58233.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426823/normal_5fa037ded9757.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/kavalukato/tupaposimetoxibi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a3f5db9-a192-412e-a1b8-89bc93e6260b/43330822836.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/lijagaxovinepezaz.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_off0000df97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF97 5544 bytes
SHA-256: e3e62e9e828a4ef2b2b8246f32b29577cc106a9b48318e947be8baa10f236d9a
font_01_sfnt_off0000f262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF262 10488 bytes
SHA-256: 9644945f8c524e66abc4810e1b41a57dfc006443c976db194acf617b59ff8612

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