Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7b03dba01d0eca3…

MALICIOUS

PDF

80.8 KB Created: 2020-12-19 09:24:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-29
MD5: f7039fad1cbe04cc92f45128f0c00edb SHA-1: 97fd48f7e53a4848224ecd5d759a75ee26898410 SHA-256: c7b03dba01d0eca3d32946eb1a0d8ac80e8edff114a1d444106942598151159f
116 Risk Score

Malware Insights

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

The PDF document was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The 'SE_CALLBACK_LURE' heuristic specifically points to a callback phishing or tech-support scam pattern, where the user is prompted to call a phone number. While no scripts were extracted, the presence of an external URI suggests potential communication with a malicious server.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://trafftec.ru/square?utm_term=android+butterknife+versions PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f8941a24b4e7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418566/normal_5faff29866b2b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374207/normal_5fd68e2de97b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450889/normal_5fd124f536278.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412996/normal_5fc5e7cb1bb12.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/jebokizez/all_of_me_piano_sheet_music_with_notes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d124812a-ec93-4650-b174-1b4adc5b395e/73604537577.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/21467244460.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0eb2c36-7734-427e-81a8-40a1a39e550d/17980730919.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/difference_between_cal_king_and_king_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/992edd42-a771-4396-b95b-a97dfde3860f/98609461058.pdfIn PDF document text
    • https://s3.amazonaws.com/gozifep/gopumasetipapupojudelifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0d03cff-c40e-4af7-aeb5-a1d56b09d6e1/wilibolifuwugujezega.pdfIn PDF document text
    • https://s3.amazonaws.com/zifozujiwi/pokey_mario_plush.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd17781d5d775a7852d99a/1606227834639/human_hair_crochet.pdfIn PDF document text
    • https://s3.amazonaws.com/wulagisi/67404289928.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_off0000fb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB14 4912 bytes
SHA-256: 7517f049ea9c6f6a649cd9457eab9a75f23b773858a60aff1542102c5a253536
font_01_sfnt_off00010be7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BE7 13548 bytes
SHA-256: f1a3f7487a22cfb96e02f18ad23a3e71983dfa1e1bc774fb440db5b530ebfe1d

Open this report in the interactive analyzer, or submit your own file for analysis.