Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ee8178bca1a0013…

MALICIOUS

PDF

79.7 KB Created: 2021-05-05 12:19:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c5284a51ba5abb387a7d9ab9d9e65d88 SHA-1: e169200acb195f60d51c49d22a9a3fc23e0da7df SHA-256: 3ee8178bca1a00130b99e3043b48d4263d07b707997d01b24ce52ed996def126
156 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many pointing to Weebly and other hosting services, indicative of a link farm or phishing operation. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links suggest it's designed to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://gimoguvi.ru/strik?utm_term=living+in+balance
    • https://wugovaxovagebi.weebly.com/uploads/1/3/0/9/130969592/dozedirobadugiw.pdf
    • https://cdn.sqhk.co/sofizagumup/dZc1jam/3048210660.pdf
    • https://cdn.sqhk.co/jiwosowo/bfhiCQx/you_da_man_meme.pdf
    • https://gifaxopolipo.weebly.com/uploads/1/3/0/7/130739444/wadelekisaguxo.pdf
    • https://cdn.sqhk.co/rojisixel/o8Hke2X/71679191259.pdf
    • https://cdn.sqhk.co/bedipidis/xtRhgFv/8143109769.pdf
    • https://cdn.sqhk.co/mozoposowi/ehbjggi/english_radio_online_free_listen.pdf
    • http://doctora.club/jabariya_jodi_full_movie_free_openloadla5q0.pdf
    • https://cdn.sqhk.co/musamari/GW0emji/nail_salon_open_late_on_sunday.pdf
    • https://cdn.sqhk.co/vetukalujir/igijb8v/95352123738.pdf
    • https://jevokave.weebly.com/uploads/1/3/4/2/134266272/352430.pdf
    • http://thehensleys.org/gujatomiselorunefitbo1jm.pdf
    • https://cdn.sqhk.co/vujagefamig/highe2y/masinarajeluravoxebew.pdf
    • http://reawont.online/kamikaze_all_video_song5fsr5.pdf
    • http://milansit.space/lowrance_elite_5_dsiatq0n.pdf
    • https://cdn.sqhk.co/bibilofefi/gd6jiij/knife_block_set_pampered_chef.pdf
    • http://ronatum.22web.org/14108606271.pdf
    • http://termometr-medikal.site/soxusigetutikanelakiwuodgwm.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/fuvidokibet/cuisinart_14_cup_coffee_maker_costco.pdf
    • https://s3.amazonaws.com/mijumomub/aap_se_mausiiquii_movie_song_bestwap.pdf
    • http://dedagujes.epizy.com/pomerekegulufupo.pdf
    • https://s3.amazonaws.com/tiniruru/83662620529.pdf
    • https://s3.amazonaws.com/nuvukivaxiren/electrical_engineering_jobs_salary_in_pakistan.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edee.bin
34c1dc93c3b6ec0cf42ab887d66219775c6a7e3e6eff68f37fb044c289db5cf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEDEE 4432 bytes
font_01_sfnt_off0000fd08.bin
049abcda467ae2791de63db6041eb974704d3f886212dd5fcc3c999c6a6a8152		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFD08 10788 bytes
font_02_sfnt_off000121ed.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121ED 4324 bytes

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