Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0fb55bdb922695b…

MALICIOUS

PDF

86.0 KB Created: 2021-03-22 03:08:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 8e8e9f5a4d99cd6e3d9fccee8fa11b16 SHA-1: ccbbcae68bf4ce4fbdfa1821d603ef8ac953d2be SHA-256: e0fb55bdb922695b5662f1b8d734f94ceb785fd5daa5ee7665b9fb3cd8191741
134 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or trojan threat. It contains numerous external links, with one prominent URL pointing to a suspicious domain, likely intended to redirect the user to a malicious download. The presence of a download button lure further supports the phishing attempt.

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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://lozipotod.ru/strik?utm_term=flight+sim+x+keyboard+controls PDF link annotation
    • http://sehq.xyz/arduino_ide_windows_10_download5d3nx.pdfIn PDF document text
    • https://kedixusivazusug.weebly.com/uploads/1/3/4/8/134869684/wukobaxil-mupagorefuluda.pdfIn PDF document text
    • https://judexibegajojid.weebly.com/uploads/1/3/4/8/134885636/wixufibix.pdfIn PDF document text
    • http://zoomita.fun/ates_ve_su_3_kisilik_oyunu_oynaq9pmg.pdfIn PDF document text
    • http://azorocheat5.xyz/58991889913xajw5.pdfIn PDF document text
    • http://liketime.fun/railway_platform_ticket_fineqjlf3.pdfIn PDF document text
    • https://cdn.sqhk.co/balapakufogo/gcIjcZE/devil_riders_bike_stunt_game.pdfIn PDF document text
    • http://my-favshopf.online/skip-_bo_castaway_caper_online_play7mru8.pdfIn PDF document text
    • https://molisepav.weebly.com/uploads/1/3/5/3/135347716/gugoniza.pdfIn PDF document text
    • http://wisitens.online/what_was_germany_like_in_the_early_1900s7lsty.pdfIn PDF document text
    • http://frontglass.xyz/fixenadesrw16r.pdfIn PDF document text
    • https://cdn.sqhk.co/xepiriza/hbYihwb/50489117138.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/ba6ea436-99e6-47ae-bbd9-79498797ee1f/kasawizirap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/976f9a1d-2165-4fda-b125-73d215acc217/mebexesota.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/596ecd49-314c-4be9-a2bc-cc8b0b08a39d/hp_photosmart_5520_black_ink_not_working.pdfIn PDF document text
    • https://s3.amazonaws.com/jubiferekaka/26652831734.pdfIn PDF document text
    • https://s3.amazonaws.com/rabewiruzitewa/banda_parwar_tera_banda_song.pdfIn PDF document text
    • https://s3.amazonaws.com/jokotaziweluge/birixot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c3970a28-4531-4e1f-a15a-5d4c019029ac/31872000968.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/purdue_systems_engineering_masters_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a1304519-d23f-4c0a-b3fa-6cdb1a05b074/automobile_mechanics_by_nk_giri_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/global_competitiveness_report_egypt.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_off00011089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11089 5680 bytes
SHA-256: 435136686730464bfd1da2b7cb59597d6748b4a28d895ec52e851787e0af8e01
font_01_sfnt_off000123c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x123C6 11396 bytes
SHA-256: 377d1bc35b545f1614a850cfac0efdfa329c234c4a958623f40f1f2a6a9423e1

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