Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64caf374032ce04…

MALICIOUS

PDF

70.9 KB Created: 2020-12-02 20:01:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 85c2a523ca343e423aa2b5a8e95bd292 SHA-1: 95877e803bd3586a3e09a27ff46458d0a231b7ff SHA-256: c64caf374032ce049045e5e6a0e57dc13dd51eae1e53b965cc4f64c169616941
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URI pointing to a suspicious URL, which is likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains text that appears to be a lure.

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?utm_term=hot+girl+summer+megan+song PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4490244/normal_5fa9ca7c19e90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426407/normal_5fc4f92e04e30.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487905/normal_5fb54297a074e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393180/normal_5fc036ae1b608.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471960/normal_5fc3d1ba526b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484609/normal_5fbcf2eb78658.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4469847/normal_5fc3c865be565.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://static1.squarespace.com/static/5fc376e18139af0376556c03/t/5fc565caf8cdb769c698ab76/1606772170880/kivojuxuv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2830cc30a162e0c5caa26/t/5fc5bbafcb3e0f5771166168/1606794161391/virgen_de_juquila_historia_real.pdfIn PDF document text
    • https://s3.amazonaws.com/wumodukubaru/44148861057.pdfIn PDF document text
    • https://s3.amazonaws.com/kopisigapub/bidewoxepiwexad.pdfIn PDF document text
    • https://s3.amazonaws.com/zerepuzuze/widulivowamerazogon.pdfIn PDF document text
    • https://s3.amazonaws.com/garorowa/xevubawofaferezov.pdfIn PDF document text
    • https://s3.amazonaws.com/towakog/98443128070.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf5363e6d49a06bb88aab6/1606374244547/17320242792.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1f6cf4403c701635aa7f/1606229869068/the_direct_materials_price_variance_is_the_difference_between_the_actual_price_of_materials.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_off0000ccb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCB4 4848 bytes
SHA-256: 25dbcfeab1bb00cadb8f555187a370084145fe70e73bba84eb04371b4db0f57e
font_01_sfnt_off0000dd12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD12 10512 bytes
SHA-256: f5220726a3606ff9f3a4e6d5b894976c70a4be317a55447b55d25ee0b0f7ee0a
font_02_sfnt_off000100d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D1 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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