Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c2cac979537b194…

MALICIOUS

PDF

81.5 KB Created: 2021-05-24 06:42:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 1c41338132a1789a0a21473c4c584899 SHA-1: d8867992cd6038b3d1c162b1501d83a3c2f7b50c SHA-256: 6c2cac979537b194c1215bcb4a936e3f279e424667cb735ec59b58af3a079a56
96 Risk Score

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 URL pointing to 'maypoin.ru', which is likely used to host or redirect to a malicious payload. The document body, though heavily obfuscated, contains text related to 'Adobe cs6 serial numbers', suggesting a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9954

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://maypoin.ru/strik?utm_term=adobe+cs6+serial+numbers PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4480755/normal_6044be5c6f3f6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415543/normal_602907d379cdc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417413/normal_5ff9a61ca9e9d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365586/normal_6025aac6008b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459188/normal_602cada27a5f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414851/normal_602b904e4133c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375350/normal_603f13a26f5a4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393638/normal_5fdc1661afd7a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471958/normal_5fcbff712c4b1.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://s3.amazonaws.com/vinejivunitego/49409171465.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/541768b5-41e1-4254-b94c-d024cb863248/28014280580.pdfIn PDF document text
    • https://s3.amazonaws.com/naxizugenabi/83193276497.pdfIn PDF document text
    • https://s3.amazonaws.com/polojuliragam/mechanical_engineering_measurement_mcq_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bcfa4c1-14eb-4f27-8e52-1ededb683c36/47173157458.pdfIn PDF document text
    • https://s3.amazonaws.com/takebemanijewok/34404232137.pdfIn PDF document text
    • https://s3.amazonaws.com/jujadodedaruxix/bacteria_gram_stain.pdfIn PDF document text
    • https://s3.amazonaws.com/fatikonavori/lufipuzurimapinujudegelir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eb6b6a3-e323-4d9e-8e35-1294002467f8/dell_latitude_7400_wont_power_on.pdfIn PDF document text
    • https://s3.amazonaws.com/lixisariwulo/keystone_dehumidifier_filter_cleaning.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/56036561302.pdfIn PDF document text
    • https://s3.amazonaws.com/gudukupir/81360287748.pdfIn PDF document text
    • https://s3.amazonaws.com/nilafafakem/40300689431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54bf954f-211e-48fb-9fe1-c6079495a8e6/48860567803.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/zawarufonojijoter.pdfIn PDF document text
    • https://s3.amazonaws.com/jazamerijekufol/50978099871.pdfIn PDF document text
    • https://s3.amazonaws.com/rodiligarexo/34496714649.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_off0000f550.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF550 5168 bytes
SHA-256: 8e69f08f1f57854360cdafe0dfe706efbf508308aa8cae45e6729134a212e437
font_01_sfnt_off000106b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106B1 10408 bytes
SHA-256: bc0ee6c57408aa6c14ed7abf41f98bf43e3aa11e8f8ea87549d51cabd1ba8564
font_02_sfnt_off00012a6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A6F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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