Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09506535728a8a8…

MALICIOUS

PDF

69.0 KB Created: 2021-02-20 06:40:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 4f32717fb2d85482bc8611f53bbf2b7f SHA-1: a10f8cef0494c35a521d3d4a44d3033ebf5e593c SHA-256: a09506535728a8a86df03216acf3c2230f775e70d4e10eb72d2a0356123267a6
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://bologen.ru/wix?keyword=drz400+service+manual PDF link annotation
    • https://cdn.sqhk.co/saxuxaka/shfUCTj/ninja_parkour_games_unblocked.pdfIn PDF document text
    • https://bigonukoduxa.weebly.com/uploads/1/3/2/7/132741189/korimojevugo.pdfIn PDF document text
    • https://rejudizik.weebly.com/uploads/1/3/4/7/134701546/a2da6ef31.pdfIn PDF document text
    • http://tibelun.22web.org/minecraft_macbook_free.pdfIn PDF document text
    • https://ladufuvugekowek.weebly.com/uploads/1/3/4/1/134108614/3029549.pdfIn PDF document text
    • https://cdn.sqhk.co/buwuvibija/jfjejgV/73309383193.pdfIn PDF document text
    • https://gusobenatidisa.weebly.com/uploads/1/3/4/4/134475091/tobututogaje.pdfIn PDF document text
    • https://mosiwiwemupal.weebly.com/uploads/1/3/1/3/131383889/sukisisoki.pdfIn PDF document text
    • https://cdn.sqhk.co/nogawevorus/kg0Mpha/fisupefiwukoj.pdfIn PDF document text
    • https://sizadomuwegemos.weebly.com/uploads/1/3/5/3/135335556/726967.pdfIn PDF document text
    • https://gawufuxawejax.weebly.com/uploads/1/3/1/8/131855981/b76c665bb25b120.pdfIn PDF document text
    • http://dejenenipanoz.22web.org/maputo_weather_report.pdfIn PDF document text
    • https://cdn.sqhk.co/sirojenu/biindgf/virus_symptoms_in_babies.pdfIn PDF document text
    • http://www.drz400e.com/?p=31In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mowumaja.epizy.com/daggerfall_skills_guide.pdfIn PDF document text
    • http://nirirojigupe.epizy.com/power_wheels_12-volt_rechargeable_replacement_battery.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/96511625968.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/portable_charger_reviews_consumer_reports.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_off0000d3b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3B8 5284 bytes
SHA-256: f1786bb84c39abdf9b9a6c777fba4aded310feefe15c674953c892ec6375b21d
font_01_sfnt_off0000e5aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5AA 9860 bytes
SHA-256: ce4e7aa875da17d3fa8f744720a5cf79e64f5f065a1a20b85ea04b1a90c32a80

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