Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f44fbf90e43f23…

MALICIOUS

PDF

77.5 KB Created: 2021-03-23 07:56:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08682aa357dc220972b842ec5e6337c7 SHA-1: 24d43ababb94cf15c8f1de6b7df93a488bbf54bd SHA-256: 63f44fbf90e43f23f1eb63975bc482892b2198d8aba9993688cdb6889519746d
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to a celebrity search, suggesting a lure to disguise the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/wix?keyword=priyanka+chopra+height
    • http://tarezirok.mypressonline.com/kobuvomiter.pdf
    • https://cdn-cms.f-static.net/uploads/4448719/normal_60373861d91e9.pdf
    • https://cdn-cms.f-static.net/uploads/4475209/normal_6027f63c6a3dc.pdf
    • http://jiwapadenejeza.getenjoyment.net/66479127735.pdf
    • https://static.s123-cdn-static.com/uploads/4463808/normal_5fcf510381800.pdf
    • https://static.s123-cdn-static.com/uploads/4405195/normal_5ffba0de7ee78.pdf
    • https://static.s123-cdn-static.com/uploads/4369908/normal_5fdf6f621f4bf.pdf
    • https://cdn-cms.f-static.net/uploads/4461751/normal_5fe727906874c.pdf
    • https://cdn-cms.f-static.net/uploads/4479673/normal_5fd7bf4cbce31.pdf
    • http://tufuwavaziga.mygamesonline.org/bojeviladopuvu.pdf
    • http://vuletotam.scienceontheweb.net/pewanemazupojesemon.pdf
    • https://cdn-cms.f-static.net/uploads/4405193/normal_60542456f0465.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/tinezedu/catalogo_boticario_2019.pdf
    • https://s3.amazonaws.com/lulelepese/lucky_jim_audiobook_free.pdf
    • https://s3.amazonaws.com/fedufiporara/xukez.pdf
    • https://s3.amazonaws.com/libowebujakux/15916536734.pdf
    • https://s3.amazonaws.com/navoburarovada/netitamipuwipanul.pdf
    • https://s3.amazonaws.com/nademopor/answering_your_question_no.pdf
    • http://zeroxezubanalil.onlinewebshop.net/aflac_claims_form.pdf
    • https://s3.amazonaws.com/kuxegu/xugetuteb.pdf
    • https://s3.amazonaws.com/domegagowevag/284261276.pdf
    • https://s3.amazonaws.com/panalipolifod/are_craftsman_lawn_mower_blades_reverse_thread.pdf
    • https://s3.amazonaws.com/jadudusujuje/jibozagovipokexurixib.pdf
    • https://s3.amazonaws.com/tojabixefova/chest_guidelines_dvt_prophylaxis_trauma.pdf
    • https://s3.amazonaws.com/povelenavuviw/54074315994.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f12e.bin
5aa6ddfe1930e99ffe2641d657ee69cd30061be0240c4011586a6e003f36eace		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF12E 5152 bytes
font_01_sfnt_off000102bf.bin
645f908e76f79be205d37037a06b051ea23e597307c76a39e75eb2b180b7fdf3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102BF 11276 bytes

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