Malicious PDF — malware analysis report

Static analysis result for SHA-256 b85260b57d2129bd…

MALICIOUS

PDF

69.6 KB Created: 2021-03-18 12:13:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7f76bfa730b4e83be208c31d44f6ecb1 SHA-1: d93f5028263a7cce2b265007d22c300b05cfeb47 SHA-256: b85260b57d2129bdd01a81605c10770eeb96cc217b76da13d657ab31a737da20
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 website disguised as a vehicle user manual. This URL is flagged as suspicious and likely serves as a lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or trojan delivery.

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://bologen.ru/wb?keyword=2011%20dodge%20charger%20user%20manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465949/normal_5fe426c0279bd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_600f153be64b1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409093/normal_60081bd747bbe.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://5a6df620-610b-4d6f-8f1b-71e936bb70bc.filesusr.com/ugd/1f5cef_fa1cc54da2604971a53b41c980fb4178.pdf?index=trueIn PDF document text
    • https://76bf09fe-c378-4d6f-baa9-beaf48595a8b.filesusr.com/ugd/61567a_a7b46356cd1242e0b4c6b474ae4efa44.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/affiliate_marketing_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/zakunafu/hypertension_treatment_guidelines_during_pregnancy.pdfIn PDF document text
    • https://ec5c17a1-061e-4a2c-a9e6-b3561ba71229.filesusr.com/ugd/299074_9ca3e9d0638e4105bcb21bf4bb109156.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/dekogamik/wondershare_mobile_transfer.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bbd104fa-d083-4ad9-b3dd-e11a2b4ed49a/mother_tongue_amy_tan_rhetorical_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5d944a43-b650-465f-abe9-f641b791bb25/mibevegaritekew.pdfIn PDF document text
    • http://lorenivi.rf.gd/centrale_vapeur_perfectcare_performer_philips_gc8711_20.pdfIn PDF document text
    • https://aee666f7-65d2-4416-8089-42e5bd85255d.filesusr.com/ugd/c4036c_7b7ad08110ee4a38bc8b17bab918f9b0.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/062f1d84-02f7-46d8-a9e1-3ada18a60d68/22445716025.pdfIn PDF document text
    • http://pinopog.rf.gd/pijubujuled.pdfIn PDF document text
    • https://s3.amazonaws.com/rujimidujek/8526343387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29f9211c-ad29-4705-9d1e-0abb77bd9400/napasipebowupilezu.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_off0000c450.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC450 5340 bytes
SHA-256: 10f1e435ccb7730fa86cd41b68389b6287168f42d30b868287d11f1cb870e9e0
font_01_sfnt_off0000d63c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63C 10388 bytes
SHA-256: ad9d660b46c3743c7a8d82ca1d9549abfaa96176889e284d76f113e64a6f54f6
font_02_sfnt_off0000f997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF997 4324 bytes
SHA-256: 8405bb6ca9a6fb718a2e910e1cdde4d74ac2122cab0061dc5f772322db9c7ccd

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