Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcc3fd4c8f4b22fe…

MALICIOUS

PDF

78.3 KB Created: 2021-02-26 17:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fad89fc016797a71be81d9b9e0483fac SHA-1: d88b4d536d725dd3f1cf1628ccd87da3ec4de7e8 SHA-256: bcc3fd4c8f4b22fe18eed307a424be834963aa13f6ccb5c110aca9a5febf8706
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, appears to be a lure related to updating TV services. The presence of multiple external URLs, many with unknown reputations, suggests a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

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://pelibifir.ru/123?utm_term=how+to+update+hulu+live+on+lg+smart+tv
    • https://jagunafine.weebly.com/uploads/1/3/4/3/134363358/tokire.pdf
    • https://tusuwijajibu.weebly.com/uploads/1/3/4/5/134517525/gijelaforag.pdf
    • http://hq-cleartv.info/application_letter_format_for_marriage_leavecveji.pdf
    • https://mejatuwunuzawe.weebly.com/uploads/1/3/0/7/130775850/8256fb87eaeed2b.pdf
    • https://static.s123-cdn-static.com/uploads/4420765/normal_6005736325d4e.pdf
    • http://harmony-market.ru/baby_soothing_sounds8umc7.pdf
    • http://kizogadojutenam.22web.org/25205012049.pdf
    • https://sazunanu.weebly.com/uploads/1/3/4/5/134596286/ramopegutawelarezutu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/sojuravewi/nelotom.pdf
    • http://mimedixaresev.epizy.com/vuvemu.pdf
    • http://lajuwojuwel.epizy.com/lujibawijejegovivenu.pdf
    • https://s3.amazonaws.com/wefadep/10384801584.pdf
    • https://s3.amazonaws.com/tokudapele/17437631742.pdf
    • http://gobusef.rf.gd/zosupokamupudesazoxa.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e6eb.bin
74bb497c84c0a2c9e1c338ff840711e4492be91d1969e2f97a124d0970314d81		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6EB 5368 bytes
font_01_sfnt_off0000f90e.bin
99e7d262a40db6ad3ef0a962c6526c867192c358fca165274c3e20a663a9d4b6		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF90E 10680 bytes
font_02_sfnt_off00011d93.bin
ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11D93 4324 bytes

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