Malicious PDF — malware analysis report

Static analysis result for SHA-256 8602a7706854a0e9…

MALICIOUS

PDF

74.5 KB Created: 2021-06-11 06:32:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 30b4a91d5512ba48e463fe180c459436 SHA-1: 66fc1aa8101181a154c550fc02a8abbcd8d8864f SHA-256: 8602a7706854a0e913ba7cd3d2bb49895c24b76b8b1ed889a388673474eb1bbb
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing or link farm attack. It contains a large number of external links, many pointing to disposable domains, suggesting an attempt to redirect users to potentially harmful content or phishing sites. The presence of numerous external URIs and the PDF_SEO_LINK_FARM heuristic strongly indicate this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • 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.
  • 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 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://pixomot.ru/pbw?utm_term=gta+sa+lite+adreno+gpu
    • https://talogaxuzule.weebly.com/uploads/1/3/4/5/134596774/6a546.pdf
    • https://zobanegasub.weebly.com/uploads/1/3/1/1/131164549/vinusidi_wevowixigufuxa.pdf
    • https://werakemil.weebly.com/uploads/1/3/5/9/135973214/wazedogepod.pdf
    • https://jilowenuvugema.weebly.com/uploads/1/3/4/8/134897306/nifagopigoralu_magiwawo.pdf
    • https://lapadodipelij.weebly.com/uploads/1/3/1/1/131164402/3c601cb3ec1.pdf
    • https://kopiwuzurori.weebly.com/uploads/1/3/1/3/131398237/eb4e49fc3c.pdf
    • https://gokidobizivoji.weebly.com/uploads/1/3/4/4/134495246/zemogewav_roporenigepad_zajute.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xetuduju.pbworks.com/f/how_long_to_watch_one_piece_without_filler.pdf
    • http://masawumel.pbworks.com/w/file/fetch/144887652/23831935477.pdf
    • https://uploads.strikinglycdn.com/files/c83a0e07-681a-4293-91d0-966f46f184e0/86271118260.pdf
    • http://laxujaju.pbworks.com/w/file/fetch/144788388/master_minds_game_show_pay.pdf
    • http://pokatufaxi.pbworks.com/w/file/fetch/144596055/77904093106.pdf
    • https://uploads.strikinglycdn.com/files/80b1d326-b9af-431a-9e6f-32425c08ee9b/wepetof.pdf
    • https://uploads.strikinglycdn.com/files/4117ed08-3484-4d5c-a3a4-e21ffaccefd7/used_honda_rebel_500_for_sale_philippines.pdf
    • https://uploads.strikinglycdn.com/files/9502dc07-48bf-4e85-be2c-0b908f53ff1f/how_to_reset_my_ipod_nano_7th_generation.pdf
    • http://viluxese.pbworks.com/f/47179590125.pdf
    • https://uploads.strikinglycdn.com/files/d03cb764-eb47-43d0-ad9c-1faeedd3ec6f/freckle_juice_book.pdf
    • http://kepojijudiva.pbworks.com/f/cuanto_equivale_un_pie_en_metros.pdf
    • http://xizisimavi.pbworks.com/f/kingroot_android_9_pie_apk.pdf
    • http://tekitejug.pbworks.com/f/8253892719.pdf
    • http://sonubugu.pbworks.com/f/sovin.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_off0000e500.bin
925f5ca2cd2be754c2d734c7a8c6fb8172446528747eb5b83589206d90a5e320		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE500 5156 bytes
font_01_sfnt_off0000f69a.bin
5fe13502085a12172b6478b55715af641473e54e88ddc1b4525bda78931070fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF69A 10676 bytes

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