Malicious PDF — malware analysis report

Static analysis result for SHA-256 72ab7f26e9c7a4b5…

MALICIOUS

PDF

78.2 KB Created: 2021-04-01 21:07:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8a70db857054ca43de637d1af558530 SHA-1: e88be7ee909b05aab57d60149cb684846c5232cb SHA-256: 72ab7f26e9c7a4b5c4616fa7352cda7aa84f5d98e0b6beb192fd37766a7d1605
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely a phishing lure. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to redirect users to malicious websites, potentially for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://botokaw.ru/strik?utm_term=first+alert+sco500+battery+replacement
    • https://rawekawus.weebly.com/uploads/1/3/4/4/134467784/loxokiwawemuvep_namumubode_rewid_puzonupaxavoje.pdf
    • https://zogeliwev.weebly.com/uploads/1/3/4/3/134353139/jewuvek.pdf
    • http://dresdenpharma.ru/17081479431p0b31.pdf
    • https://dajitogaxafolix.weebly.com/uploads/1/3/1/1/131164176/dabokuw_bewokazibanaju.pdf
    • http://1xbet-registr.site/909537306773f28u.pdf
    • http://vkrowl.com/fesotijawuvadudiznbfy.pdf
    • http://kugowulenaxo.iblogger.org/bekilakipanuvemadujo.pdf
    • https://fujazilumekopel.weebly.com/uploads/1/3/2/6/132681311/retiregis-dunadete.pdf
    • http://austritkfa.com/adjetivos_calificativos_ejercicioso2cfl.pdf
    • https://putonikasobex.weebly.com/uploads/1/3/1/0/131070178/2d828.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/7d747ca5-f26b-4412-bff0-f0b79a2de70b/48948798469.pdf
    • http://suvofaga.rf.gd/cause_and_effect_of_earthquake.pdf
    • https://uploads.strikinglycdn.com/files/8a6df339-ae39-41fe-a635-44acff052802/fios_g1100_router_for_sale.pdf
    • http://lisirowi.rf.gd/zepowipilozu.pdf
    • https://uploads.strikinglycdn.com/files/4f4334d3-3708-4cf7-b6c3-fc50d360f8a3/39620673546.pdf
    • https://2178e3ec-2e0a-46e0-af35-d8a6fdfeb21a.filesusr.com/ugd/c411cf_d0dddf65f787454c8fb90a62ff93b156.pdf?index=true
    • https://uploads.strikinglycdn.com/files/1573ec05-d473-48c1-b362-7104cde85e80/81019913029.pdf
    • http://fukafutas.rf.gd/comment_apprendre_a_parler_anglais_couramment_rapidement.pdf
    • http://xupoputidug.rf.gd/bakevinobifovipekodukiseg.pdf
    • https://6440a9f6-5e82-4153-977b-4ffe9374ec4a.filesusr.com/ugd/7182f3_286be5b4dbe14aa187ece6874163bcc9.pdf?index=true
    • https://591379ed-26d0-4405-baa7-5b8dadede013.filesusr.com/ugd/866ffa_dabd3d70cbbf40a092b12699db2af556.pdf?index=true
    • https://uploads.strikinglycdn.com/files/da05bf6b-5ec7-4885-8f29-744f073dad38/29937901776.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f268.bin
bb93828161c909ea6f8f49a151002c25f92809c8d5a3dcde6dd30b9630e7b47f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF268 5540 bytes
font_01_sfnt_off00010533.bin
a06822393f3bceb8cf5f63b307a80398f9014ae56842c97eede185d17e32bed9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10533 10580 bytes

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