Malicious PDF — malware analysis report

Static analysis result for SHA-256 129a6446f6b556e2…

MALICIOUS

PDF

77.8 KB Created: 2021-04-24 23:49:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: cc53ae4dc6c973b21b473e9c03b469e6 SHA-1: 73d7c066d8f5da11edaa2e55f2ec39ceb0914c89 SHA-256: 129a6446f6b556e2b65bd593d93894b8064e7b0cc972f7082aca616a961cdf47
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. While no scripts were directly extracted, the presence of an external URI and the overall malicious classification suggest an attempt to exploit user trust through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://soxebez.ru/strik?utm_term=how+to+do+risk+nursing+diagnosis PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450421/normal_605acc80dabc9.pdfIn PDF document text
    • http://muwikobifeke.22web.org/83905389453.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487918/normal_6001cf81a0854.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390057/normal_6007ceb20ec24.pdfIn PDF document text
    • http://degitugeb.22web.org/9473916007.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gapefixuwaxa.epizy.com/24705424037.pdfIn PDF document text
    • https://s3.amazonaws.com/simujix/46898008310.pdfIn PDF document text
    • http://jimijafo.epizy.com/43109012145.pdfIn PDF document text
    • http://patafisowu.rf.gd/41193040201.pdfIn PDF document text
    • http://gidigeja.rf.gd/luwikumelu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44fe0255-0639-4d83-ab68-6ad107e5225f/luniberesipiborute.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/educated_informed_guess_synonym.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/chhichhore_subtitles_yts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53bc7854-7d8b-4b96-aac1-ca8b97caad0c/73601716720.pdfIn PDF document text
    • https://s3.amazonaws.com/zemunomipazikez/popijel.pdfIn PDF document text
    • http://gokakotafabap.rf.gd/nunegewuvufuzakepuj.pdfIn PDF document text
    • https://s3.amazonaws.com/zarelusipofox/microsoft_sql_server_2017_express_installation_guide.pdfIn PDF document text
    • http://wifeturarotalov.rf.gd/consequential_loss_insurance.pdfIn PDF document text
    • https://s3.amazonaws.com/rolefosiju/nonconformity_and_corrective_action_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fbcc00d4-6708-4e57-b03b-53255f5907a1/thoth_tarot_deck_card_list.pdfIn PDF document text
    • http://roritobefeda.rf.gd/45657572445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bd273ef-7793-4822-948c-92a12216d1e4/can_you_j_b_weld_aluminum.pdfIn PDF document text
    • https://s3.amazonaws.com/xozeb/65225245935.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fa00f9ae-2bcc-4c15-a2af-5a5b40913dbb/ladaxebovudipimunaru.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_off0000f2dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2DC 5076 bytes
SHA-256: a0b8fc446534199c28bc7e585c975ebbb1031e1e7abbd9d412243f0d3d8a7920
font_01_sfnt_off00010442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10442 11096 bytes
SHA-256: 07ac68fcf80e8e7b7e42dd8d4b713779f98f813b2f485424632be34fab139236

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