Malicious PDF — malware analysis report

Static analysis result for SHA-256 96329384f8549cca…

MALICIOUS

PDF

76.5 KB Created: 2021-03-18 11:05:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: fd8deaec605e3a51329786aa5a0d7b09 SHA-1: 9de3901720723f755ec309ed5d0b455c6b87a444 SHA-256: 96329384f8549cca4e922052c80dbe0ac0f5b1bbe8cbcd476fc5f2e5c8ccbb12
96 Risk Score

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 URL pointing to 'fokemale.ru' which is presented as information about an 'omron body fat analyzer', suggesting a phishing or scam attempt. Numerous other PDF URLs are also present, indicating a potential downloader or dropper functionality. No scripts were extracted, but the PDF structure and embedded URLs strongly suggest malicious intent.

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://fokemale.ru/strik?utm_term=how+to+use+omron+body+fat+analyzer
    • http://clobuss.ru/suxeruwopuvf4.pdf
    • http://sodaapp.club/frankenstein_mary_shelley_sparknotes_chapter_32lpue.pdf
    • https://cdn.sqhk.co/kugorazig/0Xib3hf/muwuja.pdf
    • https://cdn.sqhk.co/jotepomi/GFmVif8/77207331265.pdf
    • https://cdn-cms.f-static.net/uploads/4454301/normal_60431bd03f431.pdf
    • http://natbeach.space/asus_rt-ac68u_manual_dansks2ck0.pdf
    • https://cdn-cms.f-static.net/uploads/4366627/normal_6048930eaac2d.pdf
    • https://static.s123-cdn-static.com/uploads/4451348/normal_5ffcc5da5d57c.pdf
    • http://italonewsero.site/python_dictionary_appendljtm7.pdf
    • http://momentikshop.space/income_tax_challan_281_in_format4k1j4.pdf
    • https://cdn-cms.f-static.net/uploads/4451750/normal_60404623c329e.pdf
    • https://static.s123-cdn-static.com/uploads/4498997/normal_600308d37d60a.pdf
    • https://cdn-cms.f-static.net/uploads/4451555/normal_5fdc389864409.pdf
    • https://static.s123-cdn-static.com/uploads/4411512/normal_5feb50a30ee0a.pdf
    • https://cdn.sqhk.co/pixafosabow/fQTheTB/tewemekazowixobadutuxu.pdf
    • https://cdn-cms.f-static.net/uploads/4503197/normal_5fe950ebea3cc.pdf
    • http://kukushka.space/stand_by_me_movie_poster_hd4dira.pdf
    • https://cdn.sqhk.co/wudubure/1EjfupI/applied_calculus_10th_edition_answers.pdf
    • https://cdn.sqhk.co/bikolazasir/ZxjjLgj/android_apps_on_windows_7.pdf
    • https://static.s123-cdn-static.com/uploads/4417029/normal_5fdfcaae5d8df.pdf
    • https://static.s123-cdn-static.com/uploads/4420602/normal_5fdd306b4e0e8.pdf
    • https://static.s123-cdn-static.com/uploads/4455207/normal_5fcc81ffc8768.pdf
    • https://static.s123-cdn-static.com/uploads/4371020/normal_5ff4b4b7b6638.pdf
    • http://wonder-ita.fun/71373156666nwbre.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000e99e.bin
e168526324bab0e94b6cb611d0b9bc8df4f33e9e2dac096121146c3017466acb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE99E 5396 bytes
font_01_sfnt_off0000fbf9.bin
669dd3ce491a60ec4f4ed17cabe1441268e854aa3b375b03c6420fb868e84d4b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBF9 13028 bytes

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