Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3a499aa31ff2002…

MALICIOUS

PDF

69.3 KB Created: 2020-11-10 21:37:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 06ea32bfd4081610180ffbdf94bd51b0 SHA-1: 9436087fa650d1248fd7ab27ec3f11eec70b4c42 SHA-256: c3a499aa31ff20028996e528d055e0b9a4073edc75e816616cab16c76eec6eb3
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically as a "Pdf.Phishing.Trojan". The embedded URL points to a suspicious domain, traffnew.ru, which is likely used to host a phishing page or download a secondary payload. The document body, though heavily obfuscated, contains keywords that suggest a lure related to "Lamborghini hot wheels".

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/aws?keyword=lamborghini+hot+wheels PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/sugosubexez/dibeveselejijefasovudozo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5da1c500-cc7c-4d69-aa45-ee34cf4fdcf2/57398474085.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6851969f-19ca-4afa-8f11-e9ba3a25f7d9/90579766102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dfe2104-ada9-4ff7-b191-57e0a9420aeb/58772857519.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/70cd7fb2-5889-42a3-99a9-6e352eb7eb21/ganumazabibazejes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/395f68d7-8086-418e-8869-fc14a8f1834a/rurupatufivog.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/418f3bb5-bab3-4802-9f1b-aea19bdf9645/my_tax_bill_naugatuck.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18962fe9-1c55-419a-b9e3-ff7e2dccc2b6/35074224512.pdfIn PDF document text
    • https://s3.amazonaws.com/sirilagewuga/58956714143.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/lemony_lemon_brownies_by_77.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e066f1f6-c4c8-497b-bb1e-ab75a7d9d3d3/xemasolafarib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/352f81f5-6a0e-49a9-a4c6-a222f8cb5832/72748045138.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0f17d7c5-1237-490a-b04a-a29add830082/gozozamuxepamase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/41cbf957-0e89-4600-a8f8-324d484ead71/57811592989.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/67989b1e-0d45-46fa-942b-19f937cc831c/sazan.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_off0000d2fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD2FC 5272 bytes
SHA-256: 95a32dfeaa8374ef224899bcd24a752c02e0934bf2f45f11fdf50bb15389004f
font_01_sfnt_off0000e4d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4D2 10572 bytes
SHA-256: 385543f70fc4a1c434499a46e5f6c45b45ead1e9f05041b23e023d941d54c9ec

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