Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc60c81e7de8ba83…

MALICIOUS

PDF

76.6 KB Created: 2021-03-17 12:59:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ab4e5792ba9894c4ff9b7c849d5979c7 SHA-1: 03a30054d0f0d4464b3deba0e7104020d41bce36 SHA-256: cc60c81e7de8ba834766bedf3db3a41f1b74ecb9240347f2bf65253343f962ef
96 Risk Score

Malware Insights

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

The file is a PDF containing an embedded URL that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The document body, though heavily obfuscated, appears to reference product details, suggesting a lure for phishing or malware download. No scripts were extracted, but the presence of external URIs and the ML classifier's high confidence indicate 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://crophysi.ru/strik?utm_term=nikkor+55-200mm+1+4-5.6+g+ed
    • http://dajobod.getenjoyment.net/breakthrough_innovation_and_growth_pwc.pdf
    • https://cdn.sqhk.co/pifixijowoka/4ihKSgj/dolujanunojolalidokef.pdf
    • https://cdn.sqhk.co/wotutovebo/heA5Hid/famous_english_songs_with_lyrics_mp3_download.pdf
    • https://losarofimet.weebly.com/uploads/1/3/1/3/131384333/kubobeg.pdf
    • http://tetoxukipim.getenjoyment.net/gutawebunaguledoziram.pdf
    • https://soxapibojewaw.weebly.com/uploads/1/3/5/3/135345372/2215751.pdf
    • https://cdn.sqhk.co/kezomerameki/dp4xX3X/disneyland_hotel_dining_parking.pdf
    • http://pasiworuwiwoz.getenjoyment.net/carry_on_my_wayward_son_supernatural_last_episode.pdf
    • https://cdn.sqhk.co/fosuzonarefi/gd4haje/kulufoleden.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/webipejonavuv/gelesexaru.pdf
    • https://uploads.strikinglycdn.com/files/c71a669e-0d99-452f-a8df-a0f5aa4037aa/what_is_the_best_compound_bow_arrow_rest.pdf
    • https://uploads.strikinglycdn.com/files/0423c375-5c10-485c-8e4d-04bce36dfca8/wugen.pdf
    • https://uploads.strikinglycdn.com/files/94425dd8-0929-417e-98fc-248ef68f16f1/sas_proc_sgplot_histogram_color.pdf
    • https://uploads.strikinglycdn.com/files/2de06011-50be-4d94-a0d2-4188a2b3d500/what_are_wasps_how_do_they_differ_from_white_ethnics.pdf
    • http://lugifer.onlinewebshop.net/biology_textbook_11th_grade.pdf
    • https://s3.amazonaws.com/goveruduzewoxu/sejusagotewiranupikokaloz.pdf
    • https://8271b8e8-1520-4b18-8785-2fafc8cd33e6.filesusr.com/ugd/efc97f_4eeb412c261e463fbd1ec73ecd73286f.pdf?index=true
    • https://s3.amazonaws.com/retobifulipo/zaverozokerukejet.pdf
    • https://6d8b2927-5c4d-40df-b593-c6bd35e19528.filesusr.com/ugd/1adac8_c2e7e89d8f5c4deba507d0b5a2533e96.pdf?index=true
    • https://s3.amazonaws.com/livivuvuwugeb/acord_35_form_free.pdf
    • http://wonanikapudidak.atwebpages.com/can_you_day_trade_on_webull_with_less_than_25k.pdf
    • https://dbb1fad9-9c05-458f-9e32-bc0b7f65d7ec.filesusr.com/ugd/451461_bf225ba8b6314b04ab3ecf0bbe0a718e.pdf?index=true
    • https://s3.amazonaws.com/vigevot/spoken_english_activities_for_beginners.pdf
    • https://ad9e3d1f-bb22-46ca-892e-b6aa3325a756.filesusr.com/ugd/837d34_b67516ff3a2b4c3d883d87661a14c4d0.pdf?index=true
    • 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_off0000eb09.bin
efc3311121c112aecb4b37c143c4e62482bbce7e7252291e935053521ca0fb8f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEB09 5512 bytes
font_01_sfnt_off0000fde0.bin
909cb5a713d7d71c98ff6224410d5fb4a58eb1ff28b681fa9fd6f9f59bdc595b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE0 12008 bytes

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