Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebb7f880f4f3c4aa…

MALICIOUS

PDF

68.1 KB Created: 2020-11-24 22:52:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88f33ab0c56ed52a62ec665a641a01bd SHA-1: d56c3a0a2c0916a26382555de017205f5fda434e SHA-256: ebb7f880f4f3c4aaff7f3972b6d7204570dab3f7a6ca1120a3511b0ae5f84a29
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious URL, likely a phishing site. The PDF structure and embedded content suggest it's part of a phishing campaign, potentially using social engineering to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://trafficel.ru/strik?utm_term=fig+newmans+vegan
    • https://givudaxoj.weebly.com/uploads/1/3/4/4/134490896/6275927.pdf
    • https://guwewekotijiz.weebly.com/uploads/1/3/4/7/134714515/1cb04c708fac9.pdf
    • https://cdn-cms.f-static.net/uploads/4384318/normal_5f8ca01152eff.pdf
    • https://rogubadivuna.weebly.com/uploads/1/3/4/3/134337887/d4eb4f1.pdf
    • https://wevupifusa.weebly.com/uploads/1/3/4/3/134356286/3822842.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/49914e3a-2d38-4ec3-9365-f7684399047a/napibome.pdf
    • https://uploads.strikinglycdn.com/files/954115a4-2c79-4e42-9087-5ff10e62775e/pukolokinejiwosafut.pdf
    • https://s3.amazonaws.com/rirusozo/choose_the_correct_answer_questions.pdf
    • https://s3.amazonaws.com/fapaga/the_romantic_age_in_english_literature.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc47.bin
99c52659e1095b04a37af9b64eaab0ad055e99302fb4d54e69fa4213e9dc8719		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCC47 4984 bytes
font_01_sfnt_off0000dd4a.bin
04e14ae1245ad20b77de209d418788fa2e46145ca44d2dba58ff6442e03fd833		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4A 11408 bytes

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