Malicious PDF — malware analysis report

Static analysis result for SHA-256 d34b200634a2a898…

MALICIOUS

PDF

82.7 KB Created: 2021-06-13 13:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 977d4403ff6c8b2051e7438e1d2e353b SHA-1: 3d69edf6ee5777419f142a4bb938e1a996288932 SHA-256: d34b200634a2a89864bf0c931418a3c80b7f9ae5d66a7c635b68cb8c85bc1841
116 Risk Score

Malware Insights

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

The file is identified as malicious by a ClamAV signature (Pdf.Phishing.Trojan) and an ML classifier. The document body, though heavily obfuscated, contains text related to 'Sims 2 ultimate collection cd key' and an external URI pointing to 'garglob.ru', suggesting a phishing or scam lure. The presence of PDF-specific heuristics like PDF_URI further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://garglob.ru/pbw?utm_term=sims+2+ultimate+collection+cd+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4387243/normal_5ff9594985f90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426277/normal_606646ba0a8c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4474470/normal_5fef8bea80343.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374986/normal_5fff5ca349320.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409257/normal_6041e3ef8e313.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_60258ac6e466a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410448/normal_601486ad2ea39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451753/normal_60befb412fa3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392651/normal_6041c3017f721.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426960/normal_601f9de098987.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463560/normal_60c1b8294dec7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375885/normal_5fc8a38c2e6b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452612/normal_602d09c0526f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367916/normal_602cef0f70da8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475382/normal_6063eb90ca5c9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370299/normal_6049c02168876.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420589/normal_60befcad4a73f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426687/normal_6065a4096f624.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/f2c3c503-2280-47b2-8ad4-d8a1a80c94e9/clark_c500_ys80_service_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2e1dfcc4-9f72-4ffb-afba-1442fc41bd5d/53443765259.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f855769d-9ab1-4062-80d2-0cff603f7d52/42413767699.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_off000101d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101D1 5388 bytes
SHA-256: 547b837614cebc1a1e4ba25542db6c7a714a95d8856d23a8fb5f2802d77c0445
font_01_sfnt_off0001141d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1141D 12536 bytes
SHA-256: 85a7c89fb0b0700d522a05c10d5eefb27f916941d83115cb192d3e9a6b7f6dce

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