Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e363483537dac95…

MALICIOUS

PDF

73.4 KB Created: 2021-04-03 06:18:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 18d9374f49b88eba83ba651d22f11be1 SHA-1: 22cf56e8f6fd2664cdc640e26cc015bd9c313304 SHA-256: 0e363483537dac957733686e301e707d1a82ec17876e7b5de98c33d5c50a5197
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing or trojan distribution attempt. It contains a large number of external links, many pointing to disposable domains or link farms, suggesting a tactic to distribute malware or phish for credentials. The presence of an exploit score further indicates it may attempt to leverage vulnerabilities for execution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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 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.
  • 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://druttle.ru/123?utm_term=ipod+nano+5th+generation+user+guide PDF link annotation
    • https://cdn.sqhk.co/lodikorep/2sCTbub/collage_maker_for_desktop_free_download.pdfIn PDF document text
    • http://es50off.pro/sikifegazurhzj6h.pdfIn PDF document text
    • https://cdn.sqhk.co/tevotapomow/cMZjaPx/74552756796.pdfIn PDF document text
    • http://digitaltoolsfor.xyz/sony_ps-lx300usb_beltbc1yk.pdfIn PDF document text
    • http://donbetosstreettacos.com/carlos_castaneda_the_art_of_dreamingd3wse.pdfIn PDF document text
    • https://lavowoluxep.weebly.com/uploads/1/3/5/3/135388351/jodinekasamire_bugozew_domevomejuzusaw.pdfIn PDF document text
    • http://toppiksnack.xyz/xozefigexokm32t.pdfIn PDF document text
    • https://cdn.sqhk.co/xewimoziwuvo/bKHgvii/97057650317.pdfIn PDF document text
    • https://cdn.sqhk.co/bexamajuw/djbXvS2/warrior_cats_toy_videos.pdfIn PDF document text
    • https://metiledozixav.weebly.com/uploads/1/3/1/1/131164016/2468218.pdfIn PDF document text
    • https://cdn.sqhk.co/vujagefamig/kSlfjil/fun_activities_for_distance_learning_kindergarten.pdfIn PDF document text
    • https://cdn.sqhk.co/tumexifukevu/oolhejd/rpg_maker_vx_ace_character_generator_online.pdfIn PDF document text
    • http://milansit.space/alkalinitas_airzinh3.pdfIn PDF document text
    • http://teksol.xyz/617604462628ectl.pdfIn PDF document text
    • https://cdn.sqhk.co/kiwapipu/i10RLij/hive_orc_vs_parquet_performance.pdfIn PDF document text
    • https://cdn.sqhk.co/wajuletixex/ZgihjCT/36801374079.pdfIn PDF document text
    • http://comp-arenda.site/88818681516v1sxk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/befafuni/mackie_profx8v2_professional_8-channel_effects_mixer_with_usb.pdfIn PDF document text
    • https://s3.amazonaws.com/gewuwasi/nominative_functions_of_nouns_worksheet_grade_5.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/how_to_play_family_feud_fast_money.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F4 5252 bytes
SHA-256: 0961be534eede885749236f1d6f6d7652f28d7e0332f452b809f03c3eb1396b9
font_01_sfnt_off0000f2ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2CA 10284 bytes
SHA-256: 760fdd696dd4c070d99976197df2d8d64aec66cf797b96e93f39f42ce30b41ff

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