Malicious PDF — malware analysis report

Static analysis result for SHA-256 3076b673867a3766…

MALICIOUS

PDF

77.2 KB Created: 2021-04-15 08:40:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ad6ccf79ad43fd8096fb227b146f7ae2 SHA-1: 218637f0cd8ff0983cef3ad7746627148bcd5721 SHA-256: 3076b673867a3766dd7d5fc5fd6562a46ba638305eb3bd4f6c17bd31d536e97a
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the detection suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/strik?utm_term=does+the+bible+support+purgatory
    • https://wuxagukokixeg.weebly.com/uploads/1/3/5/3/135398542/7ef636b0700.pdf
    • https://seruvukajobal.weebly.com/uploads/1/3/4/4/134479042/98b74a06fe395d.pdf
    • http://gamedv.design/from_the_history_of_cognitive_psychology_what_led_to_its_developmentmdhzn.pdf
    • http://tixanijematewe.mypressonline.com/33153543284.pdf
    • http://idealica-italiaoficial.site/aocs_official_method_ca_5a-_40u6swm.pdf
    • http://faripofijukevom.mywebcommunity.org/does_act_workkeys_matter.pdf
    • http://bazorapugaji.iblogger.org/vizowibuxirewafad.pdf
    • http://lnstagram-blue-badge-form.com/jatiwokoperutekikudzn6df.pdf
    • http://sis-paypal.com/rusogusarezasesei36s5.pdf
    • http://sudebatuwilazet.iblogger.org/17701699903.pdf
    • https://vezijukifi.weebly.com/uploads/1/3/3/9/133997169/5573814.pdf
    • http://tronreserve.online/80346277351x8j7e.pdf
    • http://sivolejujivozul.scienceontheweb.net/logical_reasoning_puzzles_with_answers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/d3b36a79-e608-4f02-9feb-64667c5cce68/the_apology_of_socrates_citation.pdf
    • https://uploads.strikinglycdn.com/files/aeec6a58-2d67-4631-88c6-1fb54aaf1354/bepemedujagevire.pdf
    • https://uploads.strikinglycdn.com/files/500373e6-ee80-407d-82fa-70f8e30f859e/fewewu.pdf
    • https://uploads.strikinglycdn.com/files/5d7525db-6633-463c-b45d-7e4fc2870bd1/how_to_determine_chainsaw_chain_file_size.pdf
    • https://uploads.strikinglycdn.com/files/b0e94644-f1db-4b60-aec7-408df3d5d99a/wajaruxubok.pdf
    • https://uploads.strikinglycdn.com/files/1c5881bc-e90d-4c85-9b42-7149d575dbeb/driver_msi_h81m-p33_windows_xp.pdf
    • http://ledufowi.myartsonline.com/kelosaguxetuwipozadekav.pdf
    • https://uploads.strikinglycdn.com/files/eb1bddda-fa5d-47b7-af3c-59b2cec4077e/rolukakozetevazik.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_off0000f08a.bin
b7503da5c956eaed23b8f9a30c37883f3c356ba76f61085acd3a7e5018344da5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF08A 5320 bytes
font_01_sfnt_off000102a3.bin
8c3d038b00ef4c3069026e7fd26de03fcf11ef8fdc3d5097ba3857c951d1c541		 pdf-font-stream PDF embedded font (sfnt) at offset 0x102A3 10456 bytes

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