Malicious PDF — malware analysis report

Static analysis result for SHA-256 71f1f81ebd37bdef…

MALICIOUS

PDF

71.2 KB Created: 2020-11-11 00:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 9dfbeabcd8014fffa60907b3b3e3a4da SHA-1: 60b22e6f72f60467bde4b4602880552cd7b3c007 SHA-256: 71f1f81ebd37bdefd828925a8ada2d1f7271c16caa09773cb169472ce3160afa
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that appears to be a lure for downloading movies. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were directly extracted, the presence of an external URI in a malicious PDF suggests it's part of a phishing campaign to trick users into visiting a potentially harmful 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://trafficel.ru/aws?keyword=tamilyogi.+com+2020+movies+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413473/normal_5f978b23db776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403140/normal_5f926218616b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403557/normal_5f9b30cfae4a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426409/normal_5f9f3a4a7bbb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379719/normal_5f97630223639.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416493/normal_5fa4b80bbfe19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459175/normal_5fa365b16b0fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376602/normal_5f9e5fcb3600e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450247/normal_5fa78fb38eac1.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/vifusupegiza/41592813847.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0dd0cd6-3d39-4508-bc34-ba464a0e9b1b/decompose_fractions_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/22768578830.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/dofemulidaw.pdfIn PDF document text
    • https://s3.amazonaws.com/vonusirukete/best_jedi_guardian_build_kotor_2.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_off0000cb14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB14 5380 bytes
SHA-256: 141b17b344b5824da3ac274c686cf1e1930a692f1e875270c34a8cd34b8c1f0e
font_01_sfnt_off0000dd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD5F 10656 bytes
SHA-256: 5cc23e61a219638b1ec9cad9376f8878fc3714167dd1c87f177906f36767aed9
font_02_sfnt_off000101de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101DE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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