Malicious PDF — malware analysis report

Static analysis result for SHA-256 b28b355b0c7b57e9…

MALICIOUS

PDF

66.5 KB Created: 2021-03-01 12:28:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 110c1dbaa284e5c67f1295f0e861cc73 SHA-1: f495f6252c6cfa69a411cd037e2cbd433061c4b6 SHA-256: b28b355b0c7b57e9a34e5433deb3a27609663cb2a750f8cb0f229431ac501292
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/award?keyword=kenmore+elite+washer+drain+pump+hose PDF link annotation
    • https://tidemipevu.weebly.com/uploads/1/3/0/7/130740592/1826452.pdfIn PDF document text
    • https://gitapizi.weebly.com/uploads/1/3/2/6/132683136/b41fb.pdfIn PDF document text
    • https://vogoniboka.weebly.com/uploads/1/3/1/0/131070279/subevuve.pdfIn PDF document text
    • https://lolimoxozidexus.weebly.com/uploads/1/3/2/6/132682882/91465cf9f5a7.pdfIn PDF document text
    • http://magnitoli-2ekran.site/tx_4.9_sportcraft_treadmill_error_3fmwbw.pdfIn PDF document text
    • https://gizomedapirev.weebly.com/uploads/1/3/1/4/131454265/govuzutokebal.pdfIn PDF document text
    • https://luzulobopado.weebly.com/uploads/1/3/2/6/132681737/kigadopetaduvesezun.pdfIn PDF document text
    • https://lezevonunibo.weebly.com/uploads/1/3/4/5/134577944/zuxizojewe.pdfIn PDF document text
    • https://xupalodigodub.weebly.com/uploads/1/3/5/2/135298884/vuvimafokesu.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/how_to_adjust_throttle_on_pocket_bike.pdfIn PDF document text
    • https://vavetoros.weebly.com/uploads/1/3/4/8/134854671/jalerogene.pdfIn PDF document text
    • http://mmeueue.space/geluid_blaffende_honden_enj90n0.pdfIn PDF document text
    • http://sajezexutumesu.iblogger.org/batista_wwe_theme_song.pdfIn PDF document text
    • http://cabinetshub.xyz/ziwafezafogolosusadezgd71q.pdfIn PDF document text
    • http://autocredit.moscow/idle_crafting_empire_wikimw28u.pdfIn PDF document text
    • http://tulomodev.getenjoyment.net/55683772697.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://nofadokar.rf.gd/97910613454.pdfIn PDF document text
    • http://jovifididapop.epizy.com/oregon_coast_fishing_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/wutisigila/74365374069.pdfIn PDF document text
    • http://dudibagigop.rf.gd/carlsons_guide_to_landscape_painting.pdfIn PDF document text
    • http://zufarelizija.epizy.com/tissot_t_touch_expert_solar_2_review.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_off0000c997.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC997 5260 bytes
SHA-256: d8bca993a2e58295267f6446e3020b1de24714efa149fb35fb8023d3d09070ce
font_01_sfnt_off0000db5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5F 9288 bytes
SHA-256: 87c63780109933e962de0711baceeba9317f22cc71cf5c8e6b7441e638a49b7a

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