Malicious PDF — malware analysis report

Static analysis result for SHA-256 6efbbc50990c6dc4…

MALICIOUS

PDF

92.3 KB Created: 2021-04-11 09:02:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: eec6f3bfaf820b6bb96d7d239c1b1783 SHA-1: 946bd8f2f29c61a32fe80d1b8cd915c476a6dd34 SHA-256: 6efbbc50990c6dc479c45038605916e2d1186fe4d536c38437fd6eb66a306a74
186 Risk Score

Malware Insights

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

This PDF file contains a large number of external links, many hosted on disposable domains or link farms, suggesting a phishing or content-farming operation. The presence of a specific search term like 'behringer xenyx x2442usb driver mac' indicates a targeted lure. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it's designed to redirect users to malicious or deceptive websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://baarspo.ru/strik?utm_term=behringer+xenyx+x2442usb+driver+mac PDF link annotation
    • https://cdn.sqhk.co/mugejufunij/hTFgdaX/56917557982.pdfIn PDF document text
    • https://cdn.sqhk.co/limiwebu/cifPgjO/desktop_tower_defense.pdfIn PDF document text
    • https://dapobatajixafaw.weebly.com/uploads/1/3/4/3/134310280/xepelowutimi.pdfIn PDF document text
    • https://cdn.sqhk.co/guzikiku/jEUhIPI/download_aqualife_3d_unlimited_money.pdfIn PDF document text
    • https://rezedutusijilik.weebly.com/uploads/1/3/2/7/132710703/kubafudova-nunumobuserufe-pejimezibi.pdfIn PDF document text
    • https://cdn.sqhk.co/defisepeniba/RgeWWYK/15617673989.pdfIn PDF document text
    • https://noparageselex.weebly.com/uploads/1/3/1/8/131856757/fd1a5998c3.pdfIn PDF document text
    • http://tryadasert.online/how_to_type_cubed_on_macd83mz.pdfIn PDF document text
    • http://yoga-fitness.space/87219041687wjzfd.pdfIn PDF document text
    • https://cdn.sqhk.co/ginijetemepa/E2Widje/jump_on_it_utah_locations.pdfIn PDF document text
    • http://freud.icu/hideo_kojima_game_death_strandingnfs9y.pdfIn PDF document text
    • https://cdn.sqhk.co/mowamukar/mJILNc5/27733399152.pdfIn PDF document text
    • http://idealicait.website/king_james_version_apocrypha_download2uq75.pdfIn PDF document text
    • http://adanakebap.org/niwetusejunomesibexufj73y9.pdfIn PDF document text
    • http://probmaka.tech/33231744961x5osd.pdfIn PDF document text
    • http://milansit.space/gexilieh9j.pdfIn PDF document text
    • http://trokot-roznica.xyz/49743761874ggyz6.pdfIn PDF document text
    • http://form-lnstagramcopyrightservice.com/11321816599j88pd.pdfIn PDF document text
    • https://cdn.sqhk.co/kixikeli/iiobMx5/55108712645.pdfIn PDF document text
    • http://merishwheelrecords.com/40859468139eqf0q.pdfIn PDF document text
    • https://cdn.sqhk.co/jiledexuda/ghagcEZ/23263564188.pdfIn PDF document text
    • http://prizinsta365.site/yamaha_natural_sound_av_receiver_rx_v473_manualw17av.pdfIn PDF document text
    • https://cdn.sqhk.co/fesakesovoka/2jgXmji/41328258792.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off000128a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A1 5960 bytes
SHA-256: 422a86a54512dfd716be3c58119a816b32d5ad1b61d92e1030a9c3afc5bdb37a
font_01_sfnt_off00013cdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13CDC 11404 bytes
SHA-256: 348fa75d2135a183bab6011033071c1589e0ab908debbe2cc18db99edbc0bb57

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