Malicious PDF — malware analysis report

Static analysis result for SHA-256 c71fee205973a928…

MALICIOUS

PDF

115.3 KB Created: 2021-03-19 16:49:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bdb335b8b1f7d0976647f0310f23d239 SHA-1: e08940a76b0584396695379ddae20ac503f844e6 SHA-256: c71fee205973a928bf2b26eb2e12931c80b1456b2a4deb0ccbcf44afc807f317
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'ponafet.ru/award', suggesting a lure to trick users into visiting a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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/award?keyword=heloise+et+abelard+pdf
    • https://cdn.sqhk.co/vasegodesazu/PLZFIie/49944806521.pdf
    • https://cdn.sqhk.co/wogokodu/ig9jbJh/6177162117.pdf
    • https://cdn-cms.f-static.net/uploads/4412413/normal_5fdc772f13273.pdf
    • http://steelsho3.club/98440151969s1v8q.pdf
    • http://moreprodukti.com/44837083807k4gha.pdf
    • http://lnstagram-helping-centre.com/makro_catalogue_october_2019anhq9.pdf
    • https://cdn-cms.f-static.net/uploads/4459320/normal_6051e1d002874.pdf
    • http://bupro.asia/jekidexipuc482.pdf
    • https://cdn-cms.f-static.net/uploads/4402745/normal_60405e01a3a72.pdf
    • https://cdn.sqhk.co/dikonutudibe/ieDhaRX/deadfire_aloth_romance_guide.pdf
    • https://cdn.sqhk.co/gapekozuwa/idhjyDg/camera_studio_ring_light.pdf
    • https://cdn.sqhk.co/jabosuve/dEhaTgu/zinik.pdf
    • https://cdn.sqhk.co/zogobadakedu/ejihggd/plants_vs_zombies_movie_cartoon.pdf
    • https://cdn-cms.f-static.net/uploads/4475997/normal_6046dd7996c4b.pdf
    • https://static.s123-cdn-static.com/uploads/4390381/normal_5ff259a419f04.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/napejaxosinages/whatsapp_plus_abo2sadam.pdf
    • https://s3.amazonaws.com/zosevid/the_aramaic_bible.pdf
    • https://s3.amazonaws.com/nilititonawafim/nepapor.pdf
    • https://s3.amazonaws.com/zijivevip/arlo_pro_2_manual_recording.pdf
    • https://s3.amazonaws.com/fusopoxipo/81983594737.pdf
    • https://s3.amazonaws.com/jevedijadiki/instagram_stories_template_photoshop.pdf
    • https://s3.amazonaws.com/kukazowox/thank_you_mom_quotes_and_sayings.pdf
    • https://s3.amazonaws.com/sajatesawodiji/50538987649.pdf
    • https://s3.amazonaws.com/vipuxafol/xidinu.pdf
    • https://s3.amazonaws.com/lorifumofelu/chhota_bheem_game_uptodown.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_off000179e1.bin
50dcc1681cba7946a9c7dc0155c9e588329bd00e9895389ba463724921265df3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x179E1 4816 bytes
font_01_sfnt_off00018a48.bin
dd54047fa4f9a2683ae9c4925592bfe51ceb501d19fe52606bde95c65eb814b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x18A48 12092 bytes
font_02_sfnt_off0001b1b0.bin
9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B1B0 4324 bytes

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