Malicious PDF — malware analysis report

Static analysis result for SHA-256 d380e0bf2acb0062…

MALICIOUS

PDF

83.0 KB Created: 2021-01-13 14:01:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: b47f1566570d548894d00e3d1b7df285 SHA-1: 2880543226926bea5409ce76b0dae3630bf6906e SHA-256: d380e0bf2acb0062da540137397135435c6efd92ef8793575757b9fc4dda25a0
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'https://trafficel.ru/aws?utm_term=angular+formcontrolname+two+way+binding', which is likely used for phishing or to download a secondary payload. The document body contains garbled text, suggesting it is not intended for direct user consumption but rather to exploit PDF vulnerabilities or host malicious content.

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://trafficel.ru/aws?utm_term=angular+formcontrolname+two+way+binding PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f88431da8f7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367302/normal_5f99748a3738b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392199/normal_5f993e3623847.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gelawiweza/best_manual_glass_tile_cutter.pdfIn PDF document text
    • https://s3.amazonaws.com/pibajuwi/67454836775.pdfIn PDF document text
    • https://s3.amazonaws.com/pukaridimupo/damegeleletogozixi.pdfIn PDF document text
    • https://s3.amazonaws.com/xuzed/wevuvawovinub.pdfIn PDF document text
    • https://s3.amazonaws.com/fomudebipefasu/23121816540.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/23818120405.pdfIn PDF document text
    • https://s3.amazonaws.com/visagogijulep/wii_softmod_usb_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/petubapizo/answer_instagram_messages_on_computer.pdfIn PDF document text
    • https://s3.amazonaws.com/dudigonifu/burstner_argos_747_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/dictionary_for_android_phones.pdfIn PDF document text
    • https://s3.amazonaws.com/dovulavavo/modikakexusegewomesamup.pdfIn PDF document text
    • https://s3.amazonaws.com/xonobijikivo/application_letter_format_for_job.pdfIn PDF document text
    • https://s3.amazonaws.com/livivuvuwugeb/windscribe_android_tv_apk.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_off000106b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B0 5484 bytes
SHA-256: a943edb4880275b0e9300fc7711bdcdef03b843c61a7919e7c725cdff2b48da2
font_01_sfnt_off0001195d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1195D 10860 bytes
SHA-256: 3a27c47ebe5f9f43844b3f54a67cc07f0d3ae546bcc4d8e5ea15230d3b81a8c9

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