Malicious PDF — malware analysis report

Static analysis result for SHA-256 e42c8153cf0b19e9…

MALICIOUS

PDF

68.1 KB Created: 2020-12-17 11:48:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 05607f09f3bb45ae307b1f1f33909733 SHA-1: d455faa69ec41ef4cf2f44ed0565964d72049dba SHA-256: e42c8153cf0b19e94cc40ae25ebc95e4d852a556dadc22fb4bdf3726a7eab734
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL points to a resource that appears to be a lure for downloading an 'apk game hacker no root' application, suggesting a phishing or malware distribution scheme. Although no scripts were explicitly extracted, the PDF structure and the presence of external URLs are indicative of a malicious document designed to trick users into downloading potentially harmful software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/123?utm_term=apk+game+hacker+no+root PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369158/normal_5fc347c92a714.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368989/normal_5f8e74d11dd04.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408594/normal_5fa7ef37a8247.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3873fb99-e9f6-4784-bd34-e3ccad021b02/87926264956.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bac2cbfb-e16d-4d93-b33f-bb2c4cfacc56/widitax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d7720caa-4bcd-4280-9987-588f8329be79/patosaxuxiwunokikodogavo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/64911f5a-b05b-4674-b63f-17ec14410ef8/muzixozuviv.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/commerce_dictionary_english_to_marathi_app.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/bass_guitar_finger_exercises.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/64252005348.pdfIn PDF document text
    • https://s3.amazonaws.com/fizup/gufedaluvegiraboxuv.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/9038206714.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/40ca97d0-2f7a-460f-bff1-618401fffa25/50832742775.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/do_judgements_appear_on_your_credit_report.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_off0000ce21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE21 5192 bytes
SHA-256: 21bbace08fa656cf99255ccd0b40d8da5283896fc54f4b25da767b92e781b349
font_01_sfnt_off0000dfab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAB 10748 bytes
SHA-256: 4dd4dcc96688267a7271bb371aa969d4a11428a3094f50744ab74a58b61499f9

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