Malicious PDF — malware analysis report

Static analysis result for SHA-256 b82e9efc664f9ab9…

MALICIOUS

PDF

83.8 KB Created: 2021-03-27 14:41:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6afbf7354ecf8bbcdd5972ca5d1ec268 SHA-1: 1e80228d9e2dfe60baf549601937703b39400826 SHA-256: b82e9efc664f9ab940ece3ce7b88540f1f8cc4ca9440219e28cc417ca582e76c
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1566.002 Spearphishing Link T1059.007 JavaScript

The PDF document exhibits characteristics of an advance-fee scam, presenting a fake lottery or prize requiring payment for delivery. It also incorporates a callback phishing lure, prompting users to call a number in a billing or refund context. The presence of numerous external URIs, many hosted on disposable domains, further supports the malicious intent, likely serving as a lure to download additional malicious content or phish user credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Advance-fee lottery/parcel scam lure high SE_ADVANCE_FEE_SCAM_LURE
    Document contains lottery/beneficiary or prize language together with large-value draft/funds wording and parcel/courier delivery requirements. This is a classic advance-fee fraud document shape.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://xezojetit.ru/strik?utm_term=boruit+rj-3000+battery+charger
    • http://deliwubavamir.mypressonline.com/livro_fundamentos_psicolgicos_da_educao.pdf
    • https://cdn.sqhk.co/razotefo/a84hdGV/ridedawuvem.pdf
    • http://wixosefimaba.scienceontheweb.net/87740981134.pdf
    • http://pss77.ru/eternal_water_heater_igniteryf9t6.pdf
    • http://notdull-eng.online/34857238810id9zs.pdf
    • https://nakaporona.weebly.com/uploads/1/3/1/4/131438848/wafuvowilibe.pdf
    • https://cdn.sqhk.co/wodigajamu/NhjggLq/armenia_first_league_table_and_form.pdf
    • https://galanutix.weebly.com/uploads/1/3/4/5/134591813/gokusiledif_wagaxe_lojusekuwunex_maxologil.pdf
    • http://gigezojiradof.scienceontheweb.net/carinosa_dance_literature.pdf
    • http://tufuwavaziga.mygamesonline.org/muvopupilijirokefubot.pdf
    • http://tofoxewesaxizuz.mywebcommunity.org/ahlam_mosteghanemi_the_bridges_of_constantine.pdf
    • https://cdn.sqhk.co/dajuzafum/hdRhh9l/zudedelikuligilusivefix.pdf
    • http://pivojowemetobiv.mywebcommunity.org/89999507879.pdf
    • http://autobaff.xyz/emotions_flashcards_preschoolfya4m.pdf
    • http://sewatumafuta.medianewsonline.com/29262757728.pdf
    • https://cdn.sqhk.co/bodegife/BVXjeUX/rigelurarowolipixuzunirom.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://wavexijazibivat.myartsonline.com/attestation_assedic_remplissable.pdf
    • https://uploads.strikinglycdn.com/files/7852837c-7054-48b9-9e73-8709c6541c0a/89690014253.pdf
    • https://uploads.strikinglycdn.com/files/0f6bf032-f33d-4afe-af7c-b85b9173c5dd/95206822961.pdf
    • http://muzulozak.atwebpages.com/99672740305.pdf
    • https://uploads.strikinglycdn.com/files/2317c70e-dad9-4fa8-a5c4-30c46fdc8299/breaking_night_chapter_6_summary.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_off00010943.bin
6a12a5cbb97fa757ba3537f372b727a917f5f156b09012c05f2c8f9370f1151d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10943 5556 bytes
font_01_sfnt_off00011c3c.bin
8af79321399e4183c869fd0c4ba6076ae9125bdef31c79177d4b39bfc0436086		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11C3C 10968 bytes

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