Malicious PDF — malware analysis report

Static analysis result for SHA-256 403b0291d99b98d6…

MALICIOUS

PDF

72.7 KB Created: 2021-02-27 04:04:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 4f718271e38726f540b30ba469a594a9 SHA-1: 38336ea7ea307f5b32f73877fcbbbcab260da2f1 SHA-256: 403b0291d99b98d6332bee652b85990a57b9d947d6983ce6a0c50b2100405551
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://ponafet.ru/wix?keyword=ap+chemistry+2008+free+response+answers PDF link annotation
    • https://cdn.sqhk.co/valujoper/gfnjigZ/falling_waters_trail_map_new_hampshire.pdfIn PDF document text
    • http://handler-autoscout24.com/kovarikuxikuzeatb4o.pdfIn PDF document text
    • http://hot-money.fun/are_amy_frozen_meals_gluten_freesrcch.pdfIn PDF document text
    • http://cmb-accueil.com/cisco_e1200_firmware53dud.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/ifKePjj/favinajotefonupoleb.pdfIn PDF document text
    • https://xuzumuja.weebly.com/uploads/1/3/1/6/131636792/kafuwibeduzako.pdfIn PDF document text
    • https://cdn.sqhk.co/zewesifadeka/Y4giPhi/wuvevunuvesineruzugipimo.pdfIn PDF document text
    • https://cdn.sqhk.co/bidogefapo/DrQNMjf/basketball_world_cup_2006_final.pdfIn PDF document text
    • https://zexajupa.weebly.com/uploads/1/3/4/6/134692079/7e62f0f8c.pdfIn PDF document text
    • https://gedibaforajipet.weebly.com/uploads/1/3/0/8/130874683/23783.pdfIn PDF document text
    • http://bestpriceforukraine.xyz/230_volt_to_120_volt_transformer3z4yx.pdfIn PDF document text
    • https://falototadapi.weebly.com/uploads/1/3/3/9/133989324/52b801617bba27.pdfIn PDF document text
    • http://naturagrush.space/399508586718zzxe.pdfIn PDF document text
    • https://derigibi.weebly.com/uploads/1/3/4/4/134447264/726298.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/wunojipu/69798039071.pdfIn PDF document text
    • https://s3.amazonaws.com/kibavutibeved/3678740258.pdfIn PDF document text
    • https://s3.amazonaws.com/turip/dd_campaign_idea_generator.pdfIn PDF document text
    • https://s3.amazonaws.com/sojaxub/88600288244.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_off0000db4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB4F 5872 bytes
SHA-256: 561d2ae029013ecb241c8673e461ed29e27ab5b86634966e43fe2a6c010a6224
font_01_sfnt_off0000ef42.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF42 11300 bytes
SHA-256: 72db8b4cfe33848a4387fed691f0916c4711c3efa8092be67e59b98150bd625b

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