Malicious PDF — malware analysis report

Static analysis result for SHA-256 60317ec651e2b5c3…

MALICIOUS

PDF

84.2 KB Created: 2021-04-17 18:00:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c1018fe3ef26012cf4ceeb3092de48b6 SHA-1: 3cbfd8c0d6b62e338d382344cbe58c361e6e1edb SHA-256: 60317ec651e2b5c38fd81e8d3d29c2ddea698fa637f04e9cdc784c908a027632
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged as a link farm. This suggests the primary purpose is to redirect users to potentially malicious websites for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/strik?utm_term=hisense+air+conditioner+portable+e5 PDF link annotation
    • http://olipaka.xyz/theories_of_second_language_acquisition_summarya7yjw.pdfIn PDF document text
    • https://cdn.sqhk.co/bugabowozi/Thrq7zn/multichoice_diski_challenge_results_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/fofateze/hjjbieS/vawabupevaberobalezubo.pdfIn PDF document text
    • https://cdn.sqhk.co/sifalavuxozo/GFhaYjj/segolukipa.pdfIn PDF document text
    • https://cdn.sqhk.co/riwifesineji/eIKRqji/tear_the_cloth_mod_apk.pdfIn PDF document text
    • http://uscarinsurance.info/vishnu_sahasranamam_lyrics_in_kannada_with_meaningjwxbn.pdfIn PDF document text
    • https://cdn.sqhk.co/xadowififux/etxGheZ/youtool_gta_5_map.pdfIn PDF document text
    • http://wugafis.66ghz.com/2981303060.pdfIn PDF document text
    • http://prosucre.pro/12049471058znvnr.pdfIn PDF document text
    • http://helpcontactform.com/thomas_friends_go_go_thomas_gamedli40.pdfIn PDF document text
    • https://cdn.sqhk.co/xovujiroveg/Ohd3he9/ncert_books_ncert_solutions_for_pc.pdfIn PDF document text
    • http://coloradocustomelectric.com/kojegudafiropadezaxae2l2v.pdfIn PDF document text
    • http://mivibowefumar.iblogger.org/dezagubaxeruzonaturaxon.pdfIn PDF document text
    • https://cdn.sqhk.co/jarixizotib/jckllha/nobodies_murder_cleaner_hack_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/fuguwaso/kZjiL97/litumigufex.pdfIn PDF document text
    • https://cdn.sqhk.co/buwowunuras/igggejc/puxipewenozug.pdfIn PDF document text
    • http://top-salez.site/telugu_movies_2018_free_mp4_avioe91i.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/4bb8fd4a-404a-4942-a7c0-e6a407fac9fe/35811590968.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/52c29487-a2b8-43f4-b672-2857033c2f17/why_does_my_right_leg_hurt_so_bad_when_i_lay_down.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2349e718-f061-4035-be3f-15ade26771c7/can_i_do_weight_training_without_equipment.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fe56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE56 5080 bytes
SHA-256: 4384fbe46decaa56ad4515e6fe11750e3fbb526fb3fbd111a8c2507b090a237f
font_01_sfnt_off00010f88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F88 11124 bytes
SHA-256: 508cd5665f6a3860969d25af2503b487aa2bd788177b1a28a60ecba0608d7b82
font_02_sfnt_off0001356c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1356C 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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