Malicious PDF — malware analysis report

Static analysis result for SHA-256 9419db3343d3b922…

MALICIOUS

PDF

72.7 KB Created: 2021-05-17 09:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: be22956a3d305500550eacaa5ec1dc44 SHA-1: 295b75bb9d8ad04cc80267c8345d816289656e51 SHA-256: 9419db3343d3b922d16f68748a6210b4b98714f09fdd1d8302c2a37097cef459
186 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to direct users to malicious sites. The presence of a URL with a 'garmin+delta+xc+sport+collar' UTM term indicates a lure related to a specific product. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://xezojetit.ru/strik?utm_term=garmin+delta+xc+sport+collar PDF link annotation
    • https://cdn.sqhk.co/rifarako/aYKciby/absorption_of_light_energy.pdfIn PDF document text
    • https://cdn.sqhk.co/bimolixumotu/jdUhcd5/13123704920.pdfIn PDF document text
    • https://cdn.sqhk.co/felolavap/aD6Shiy/57943530080.pdfIn PDF document text
    • https://cdn.sqhk.co/muzexeragod/jj9Ljdu/64122963394.pdfIn PDF document text
    • https://cdn.sqhk.co/letarezetap/yziikgg/lutejufe.pdfIn PDF document text
    • https://cdn.sqhk.co/rapovebakeb/heCDijB/ludogorets_u19_soccerway.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/816b6f66-84c6-4562-87e8-be319ceb447f/tizurevukekenijitusajap.pdfIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_adef736e1d904e118335c3e4dcae32a8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/25fd366f-926f-4383-bfa1-f91f830e32a0/attack_on_titan_season_3_op_2_lyrics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b359e17f-9dee-48d0-bf68-cf367ed6535b/sunbeam_steam_master_iron_temperatures.pdfIn PDF document text
    • https://9534cc33-30dc-483d-bed2-8d5691710d48.filesusr.com/ugd/3835dd_c6cc137567014a2abb140fbc3839f3eb.pdf?index=trueIn PDF document text
    • http://ruditofejew.rf.gd/10_thirumana_porutham_meaning_in_tamil.pdfIn PDF document text
    • https://92ddf5cc-4ce7-4caf-b117-8241c553a727.filesusr.com/ugd/42bae0_67be456e89ef4e26899e25f58be01cd8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f31c0dfd-ea38-4cc6-aee9-19523c589c43/can_i_go_to_sniper_school.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9817edcb-62e6-4bff-8ec5-75aa8fe23199/dona_barbara_telenovela_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcdad83e-f366-4b2b-acc1-43a58db2a7e4/fuguborugitega.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45625257-693d-4c35-a54f-4a15bff147e4/wamosexopegukuvuxi.pdfIn PDF document text
    • https://dc58184e-bbba-402a-8e08-a55d552c8f3f.filesusr.com/ugd/0ebc1f_98683a0c21b9472caf4029eb09fefa12.pdf?index=trueIn PDF document text
    • http://vebavibokifoko.epizy.com/kubuxeropefad.pdfIn PDF document text
    • http://bamefifib.epizy.com/system_shock_2_hacking_guide.pdfIn PDF document text
    • http://zisunajupanege.rf.gd/blockchain_blueprint_for_a_new_economy.pdfIn PDF document text
    • https://0e8f88b9-656e-4b05-9cd8-8bd477f85547.filesusr.com/ugd/95b9ea_2306f0c789ef43b1b48967dbe29894cb.pdf?index=trueIn 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_off0000dc99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC99 5316 bytes
SHA-256: a9570b7dde8b408563371d80e317876f59f7bb0bea0fd7946e6707feeab4be46
font_01_sfnt_off0000ee9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE9E 11444 bytes
SHA-256: 0b0998c3172ce51fbdea94014b6ebf0aa3534295818f0a47c91ec3caef5496b2