Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ef88e63b4c54195…

MALICIOUS

PDF

76.8 KB Created: 2020-11-21 11:58:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: e752f3b4945420d65fd13e8fa75708f5 SHA-1: 188da92e95096fb43f00b34dd9fd5ed393e23bf9 SHA-256: 2ef88e63b4c541954d18bfb714b6da7cbdae1549ea719e5f7e6de100fed2abed
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to 'traffking.ru', which is a strong indicator of a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the presence of an external URI within a PDF, combined with the heuristic firings, suggests an intent to redirect the user to a malicious site.

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://traffking.ru/aws?utm_term=miya+bhai+song+lyrics+video PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365635/normal_5f870355125dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379618/normal_5fab4f29844b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376369/normal_5fafa6d49168b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412775/normal_5fa5157b15f29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380531/normal_5f8bd2ca28e48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fc9a6308-32e0-44d4-84cf-177961f14ae7/35704795534.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/mercury_25_hp_4_stroke_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/dunaziwukopodoluvibef.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f99829d3-d270-4d3e-9da1-8cd45e668f01/download_w3schools_offline.pdfIn PDF document text
    • https://s3.amazonaws.com/fasanag/ponapojepidexalelurepowas.pdfIn PDF document text
    • https://s3.amazonaws.com/widetunipet/wakefexawonapewafurop.pdfIn PDF document text
    • https://s3.amazonaws.com/padadutiseni/solve_for_ytm.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6ff93d6-7c5b-48ad-8216-4f1013dcd3ce/vugakimotozesakupokul.pdfIn PDF document text
    • https://s3.amazonaws.com/megelugik/loduzagagabavirifepupija.pdfIn PDF document text
    • https://s3.amazonaws.com/sefiwegegagu/50549066960.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e251.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE251 5216 bytes
SHA-256: 0984e1fc8ddc8165032dbe9965306ca5a602a1cd48e3be740b8f51a1622e60c0
font_01_sfnt_off0000f3fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FA 10552 bytes
SHA-256: 1ee5c7b53692f254eea71b89354ac46114d0beb58e9dd3b2e77d06508934c409
font_02_sfnt_off000117e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117E6 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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