Malicious PDF — malware analysis report

Static analysis result for SHA-256 63483094a7d28442…

MALICIOUS

PDF

72.4 KB Created: 2021-03-05 14:03:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 7837e1adda3cd8b9a7b54b01bcdb91f4 SHA-1: 4fb9c21688e9a4156de9205f76b95544b91bc192 SHA-256: 63483094a7d284423894a56f8337af8f33310e00d0bcffbfaf0b2bd763b1b47b
186 Risk Score

Malware Insights

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

The PDF file contains numerous external links, identified as a link farm, with the primary URL being `https://soxebez.ru/award?keyword=piriformis+strengthening+exercises+pdf`. This suggests a phishing or SEO manipulation tactic. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://soxebez.ru/award?keyword=piriformis+strengthening+exercises+pdf PDF link annotation
    • https://rasozonikazip.weebly.com/uploads/1/3/4/9/134904665/3498598.pdfIn PDF document text
    • https://cdn.sqhk.co/letinumi/sjbZEWR/tibisubu.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/fbvV7C7/wixusotatepefewi.pdfIn PDF document text
    • https://cdn.sqhk.co/zogobadakedu/e4Qohdv/galaxy_trucker_2_player.pdfIn PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/7e417739c1.pdfIn PDF document text
    • https://fekamudubop.weebly.com/uploads/1/3/5/3/135325245/disejizozazokakodes.pdfIn PDF document text
    • https://repotadidutu.weebly.com/uploads/1/3/4/3/134310826/vulawaberil.pdfIn PDF document text
    • https://pirizujimo.weebly.com/uploads/1/3/4/4/134454944/lifelinuf.pdfIn PDF document text
    • http://tavafotuzefox.sportsontheweb.net/ps_vita_emulator_1.4.1_download_for_android.pdfIn PDF document text
    • https://cdn.sqhk.co/soziwariru/jbjejcb/scary_teacher_3d_ki_video.pdfIn PDF document text
    • https://xoputiwi.weebly.com/uploads/1/3/1/4/131438532/6639908.pdfIn PDF document text
    • http://bejawutipage.mywebcommunity.org/room_essentials_desk_assembly_instructions.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/6dc743bd-af34-49d0-95f0-6d1c990b0ef2/picostation_m2hp_harga.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42c001ed-c80f-4faf-a266-4c928ca6e644/senukuwovabalejexudet.pdfIn PDF document text
    • http://jitawidavez.atwebpages.com/59448518975.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/017e6814-0fec-44c0-9321-55d248d80b4c/warhammer_40k_rulebook_8th_edition.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_off0000decc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECC 5396 bytes
SHA-256: b0622a01275edadae3bc80574b96f1e372206323ab1df003bbbeaaa4838bdf08
font_01_sfnt_off0000f10b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF10B 10376 bytes
SHA-256: 190abb1da4abd1b448fbf60a1ea91b644f2605df760920dbfbbef496466736c4

Open this report in the interactive analyzer, or submit your own file for analysis.