Malicious PDF — malware analysis report

Static analysis result for SHA-256 833bb8379d99ab61…

MALICIOUS

PDF

73.7 KB Created: 2021-03-31 04:02:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca22e221336d133deee2815c8ac8819f SHA-1: f07923e4d0a89e9b9da133071f209efea71a50cb SHA-256: 833bb8379d99ab61fb23b9efddb233c0fb3689794f90d10d7e01815b744379e1
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, indicating a high likelihood of malicious intent. It contains numerous embedded URLs pointing to unknown PDF files hosted on suspicious domains, suggesting a phishing or malware distribution lure. The document body, though heavily obfuscated, contains metadata related to PDF generation, and the presence of embedded URLs points towards a potential T1059.007 (JavaScript) execution if the PDF were to be opened and interacted with, likely to redirect the user to one of the malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 http://rusakova.space/duforikurewexutam9uf39.pdf
    • http://tulakijumipad.22web.org/sixaguzikediveki.pdf
    • http://parkingtest.xyz/74407469476nvqj9.pdf
    • http://subbellassecret.com/bivabegunakunag7wuje.pdf
    • http://fitit.space/89361958491irucq.pdf
    • http://ralugugifoxatir.scienceontheweb.net/96217725888.pdf
    • http://douchehq.xyz/31641138643zzfqv.pdf
    • http://petrol-v-pol-price.site/how_to_make_a_cleric_5ezx59l.pdf
    • http://damvglaz1.xyz/english_vocabulary_test_questions_and_answersd6ht7.pdf
    • http://avit0.pro/carboidrati_lipidi_proteine_e_acidi_nucleiciohg5b.pdf
    • https://static.s123-cdn-static.com/uploads/4393186/normal_5fc91d9733291.pdf
    • https://static.s123-cdn-static.com/uploads/4416143/normal_6003c31abf7c4.pdf
    • http://about-central.com/75313527200lulb7.pdf
    • http://odebayitrafikhizmeti.com/51062428215syfu9.pdf
    • http://fotonagosuslugi-01.space/19606636872clrg0.pdf
    • http://copyrightsafetyhelps.com/bovujolomotebelm3xru.pdf
    • http://nikibolerobika.getenjoyment.net/32221538554.pdf
    • http://tameenegypt.com/62208046559t2ewe.pdf
    • http://verification-help.com/170931139errrk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://feedproxy.google.com/~r/wb/ENAH/~3/KjdSuPfhPRY/wb?keyword=figurative%20language%20powerpoint%205th%20grade
    • http://viwofobowitol.epizy.com/mevav.pdf
    • http://ligoroxenafof.atwebpages.com/2467749748.pdf
    • http://nejetetivapane.epizy.com/ziluxamazajafosutaxemev.pdf
    • http://fatijilipoto.epizy.com/12066954885.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_off0000e1e6.bin
554e390037d35dfc4ced24d6343e6c0a0598956e3a26ac1af6e2f9662e366091		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E6 5276 bytes
font_01_sfnt_off0000f3eb.bin
7f64a68ad2fa9872fbc177787bc9e9b2cff786f026bbdb6e5cd6741008a41fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3EB 10184 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.