Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fbe245736193217…

MALICIOUS

PDF

77.3 KB Created: 2021-03-23 21:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 293e623cabbd4b448444608d07ddd356 SHA-1: e7944b414e177dd524b610b645d85900c39fe9f1 SHA-256: 9fbe2457361932176b1d00643a7bbf0ce08cd7e9ba0729d721920164288d853a
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'fokemale.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, suggests a lure related to a book download. No scripts were extracted, but the presence of external URIs indicates an attempt to redirect the user to a malicious site.

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://fokemale.ru/aws?utm_term=i+am+albert+einstein+book+pdf
    • http://jekenufakewe.mypressonline.com/xakadokebenujuj.pdf
    • http://tamogulaganero.scienceontheweb.net/45321511228.pdf
    • http://wijutomotagam.mypressonline.com/calisthenics_exercises_chart.pdf
    • http://tonedomopoja.scienceontheweb.net/5668499497.pdf
    • https://cdn.sqhk.co/mugukawi/knJg7he/livabukulotososagavefi.pdf
    • http://kewatupu.scienceontheweb.net/37516142833.pdf
    • https://cdn.sqhk.co/bedogipaxog/jfYjhgf/99965384568.pdf
    • https://cdn.sqhk.co/lokutibu/ige3Dhf/77425286886.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/2483c32f-abe2-4268-9a76-27b526a547d9/lawoja.pdf
    • http://wepogevadapafa.atwebpages.com/how_heavy_is_graco_snugride_35.pdf
    • https://uploads.strikinglycdn.com/files/0d2dc604-4dff-4d02-8e78-6c9b24df12ee/mibaxurafixonave.pdf
    • https://uploads.strikinglycdn.com/files/d0806afc-9269-4c34-8fb9-34cf97c1d682/14023288997.pdf
    • https://uploads.strikinglycdn.com/files/2508e23b-a995-400c-b908-68ee336e2e78/11728442670.pdf
    • http://futikuzita.onlinewebshop.net/hp_probook_6455b_ram_upgrade.pdf
    • https://uploads.strikinglycdn.com/files/bd001b09-aaea-400a-997b-3fa8842a0cdb/46317763064.pdf
    • https://uploads.strikinglycdn.com/files/616abdc8-19be-4815-9ab9-de278f634e2f/39866890938.pdf
    • https://uploads.strikinglycdn.com/files/39055e54-3f7e-46f1-ab70-fb2d58ef2477/89279440097.pdf
    • https://uploads.strikinglycdn.com/files/68ea523f-9445-49d8-b27f-4276d2d37b73/how_do_you_compare_and_contrast_two_stories.pdf
    • https://uploads.strikinglycdn.com/files/a0d3d4b6-967b-42e3-9ebd-ad3f29103f07/sony_playstation_vita_lowest_price_in_india.pdf
    • https://uploads.strikinglycdn.com/files/284d21a8-d4b4-41a0-a05a-f53c7cb4baca/greek_mythology_names_beginning_with_k.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_off0000f2c0.bin
5f7da998b924bc01952d5c2356680b1c0377c1a50adf946f04cee4cb39210014		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2C0 5328 bytes
font_01_sfnt_off000104c1.bin
7b70575eae53aea80264ac16fd5dd41ebd0343482798addfaca38f31599fe194		 pdf-font-stream PDF embedded font (sfnt) at offset 0x104C1 10460 bytes

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