Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc26233d09f003f6…

MALICIOUS

PDF

89.0 KB Created: 2021-04-05 04:30:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 528f26b221f19cb9de2b081027504ae1 SHA-1: 7180f746ac354d7812cf3bb5961c2463f04a07dc SHA-256: cc26233d09f003f627d151d4ce2b2d99a0cce3390a5116a0f52a7acc13931dde
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and numerous other suspicious URLs suggest the document is part of a phishing or malware distribution campaign. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

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://zajinet.ru/strik?utm_term=how+to+tell+how+old+my+goodman+furnace+is
    • http://fisareboveda.getenjoyment.net/wawapovenimufuvim.pdf
    • http://bestsaleshopin.xyz/bioethics_principles_issues_and_caseuio2g.pdf
    • http://hempmap.ru/42148051562jnjo.pdf
    • https://cdn-cms.f-static.net/uploads/4466151/normal_603487ad17e02.pdf
    • http://douchehq.xyz/boy_scout_citizenship_in_the_community_merit_badge_pamphlet1x7v5.pdf
    • http://bufo.online/fifty_shades_freed_full_movie_2018_in_hindi_download_filmywapc56xq.pdf
    • http://gavolav.mywebcommunity.org/79931376651.pdf
    • http://p-kavkaza.ru/how_far_was_tarshish_from_nineveh8vmry.pdf
    • http://roman-holidays.shop/7466185487xn86d.pdf
    • https://cdn.sqhk.co/wezupobuwab/jgCogJF/paypal_app_login_pin.pdf
    • https://cdn-cms.f-static.net/uploads/4416494/normal_6055635d7f458.pdf
    • https://cdn-cms.f-static.net/uploads/4477620/normal_605f8f58d6b59.pdf
    • https://static.s123-cdn-static.com/uploads/4463810/normal_5fc8bac831a95.pdf
    • https://cdn.sqhk.co/xovujiroveg/eMXjhhh/komume.pdf
    • http://kmikaerfs.ru/lopazovomizanalejeserela2oq9y.pdf
    • https://cdn-cms.f-static.net/uploads/4481695/normal_6050a7523cd9c.pdf
    • http://copyrightsupporteds.com/botw_bullet_time_bounce_tutorial6xll5.pdf
    • http://lobafor.mypressonline.com/bangalore_metro_route_map.pdf
    • http://repair-kvadrokopterov.ru/how_to_change_toner_on_brother_mfc_printery6b80.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/3a69a794-1882-46bc-8725-f0a3b5f3100d/12015868921.pdf
    • https://uploads.strikinglycdn.com/files/568a3eda-7aaa-47fb-9e9e-10b90a2803a1/fekawo.pdf
    • https://uploads.strikinglycdn.com/files/12e2c503-d27c-4eea-b02e-524a626725ea/65364780118.pdf
    • https://uploads.strikinglycdn.com/files/57a80890-37b3-45de-b5ac-ce4bd273e6b5/22436944410.pdf
    • https://uploads.strikinglycdn.com/files/847e8e29-5e45-4561-babf-bfeace3d4283/singer_confidence_quilter_buttonhole.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_off00011ae6.bin
eb05e2faacfb31e3bd51666da3e806b6ebe3865e97c7f1b5121ee7d3c2bd2024		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AE6 5592 bytes
font_01_sfnt_off00012dd7.bin
6862eabeaa9875788c0b0f19f8e117dedc9affb0b058288e735ac173eec958b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD7 12100 bytes

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