Malicious PDF — malware analysis report

Static analysis result for SHA-256 cc42ea1316bc7a7f…

MALICIOUS

PDF

80.9 KB Created: 2021-04-24 11:13:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6784f369388ab5703eb58115666b6093 SHA-1: 92cba22d86f86fa1f7601523d35808dcea8c6304 SHA-256: cc42ea1316bc7a7f4e9c464678638724533a0c743c6befbcd665c80079d48954
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains a reference to 'Altered Carbon season 2 ending stack', likely a lure to attract victims. The file contains numerous external URLs, with https://pelibifir.ru/strik?utm_term=altered+carbon+season+2+ending+stack being a primary indicator of malicious intent, likely serving as a redirector to a phishing or malware distribution site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://pelibifir.ru/strik?utm_term=altered+carbon+season+2+ending+stack
    • https://cdn.sqhk.co/kuwusemob/jathiji/tigesavezodavawazezodoju.pdf
    • http://mikovil.mywebcommunity.org/46686988044.pdf
    • https://cdn.sqhk.co/nisosawero/Cjfjbig/tauceti_vulkan_technology_benchmark_requirements.pdf
    • https://varusotefus.weebly.com/uploads/1/3/1/3/131398431/9297658.pdf
    • https://natulawud.weebly.com/uploads/1/3/4/3/134309077/tanedeboze-zojop.pdf
    • https://cdn.sqhk.co/zogowefu/igogejg/wave_hotel_condado_puerto_rico.pdf
    • http://raruranakadup.iblogger.org/51122276140.pdf
    • https://cdn.sqhk.co/ximosufi/gsjgiRA/cardo_packtalk_bold_manual.pdf
    • http://zisezamerares.mygamesonline.org/aurelius_meditations.pdf
    • https://cdn.sqhk.co/vibisidumes/hghdDgd/95993180004.pdf
    • http://xofadipozizo.iblogger.org/wamaw.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://posikin.myartsonline.com/libro_de_geometria_analitica_bachillerato_contestado.pdf
    • http://vezufokat.rf.gd/norenujafilif.pdf
    • https://f6ce3cfb-f922-470c-9e0e-eaf724001b0e.filesusr.com/ugd/defcb2_e00c7ccea25247c8ad255c489ea86fdb.pdf?index=true
    • http://moxapowi.myartsonline.com/kitchenaid_toaster_oven_knob_replacement.pdf
    • https://s3.amazonaws.com/risisipajole/29916676583.pdf
    • https://s3.amazonaws.com/vipinib/60233254669.pdf
    • http://kemexulirejaror.rf.gd/rustoleum_cabinet_transformations_pure_white_vs_linen.pdf
    • https://s3.amazonaws.com/tawosutosuxi/story_of_my_life_funny_quotes.pdf
    • http://dizogabage.rf.gd/how_to_download_autocad_electrical_2020.pdf
    • https://s3.amazonaws.com/xeropizuwe/forklift_driver_license_template.pdf
    • https://8ca15cf9-c5bf-4329-906a-32df3c7b5ab7.filesusr.com/ugd/4ca7f5_d46d64c07de0434f97eb872979efb5c0.pdf?index=true
    • https://ca483b97-61ac-4196-bca0-6b249c18eca9.filesusr.com/ugd/b27199_1be44525fe004382ae3a1fbc02d34245.pdf?index=true
    • https://s3.amazonaws.com/bibejovixapis/60688624728.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_off0000fe8b.bin
8e57932116e14a7c5a96bb96e4d21cc983773a67579c1a645d7ad44b11ddbb93		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8B 5432 bytes
font_01_sfnt_off00011113.bin
ecf9ea3f2343dbbacbb9c10052ed2e6e1469efb46eb1c0e1d1132aed7e4480bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11113 10924 bytes

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