Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfba3530ca7e26c…

MALICIOUS

PDF

83.3 KB Created: 2021-05-02 09:15:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 3702c24050f94508211aa63aa86604d1 SHA-1: d7d655c5131d84751cf336c7ba33a81913df1c74 SHA-256: 2cfba3530ca7e26c6093e8fe9b98134b9c1ad3ad70efdd16ee4687525f16528e
126 Risk Score

Malware Insights

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

This PDF file is identified as malicious by ClamAV and an ML classifier. It contains numerous external URIs, with a primary one pointing to 'dugedepap.ru', suggesting a phishing or redirection attempt. The document body, though heavily obfuscated, appears to be a lure related to Skyrim mods, likely intended to trick users into visiting the malicious URL. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

Heuristics 5

  • 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://dugedepap.ru/strik?utm_term=best+load+order+for+skyrim+mods+xbox+one PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4418000/normal_5fdfc217829ac.pdfIn PDF document text
    • https://dojufewuwi.weebly.com/uploads/1/3/4/2/134235401/1548007.pdfIn PDF document text
    • https://dafuzimobolu.weebly.com/uploads/1/3/4/4/134498283/notisa-jebekezewe-malew.pdfIn PDF document text
    • https://bawufavipefal.weebly.com/uploads/1/3/0/7/130740211/ramaxoz.pdfIn PDF document text
    • http://mowefopovog.mywebcommunity.org/56374886148.pdfIn PDF document text
    • https://bekobivovovezu.weebly.com/uploads/1/3/4/6/134608345/2772082.pdfIn PDF document text
    • http://tojuvapemupo.mywebcommunity.org/85012122906.pdfIn PDF document text
    • http://nigavereke.mygamesonline.org/navy_blue_coat_outfit.pdfIn PDF document text
    • http://gopudumimipabol.mypressonline.com/critical_and_creative_thinking_activities_grade_4.pdfIn PDF document text
    • http://rowexusaje.mypressonline.com/vofixunakutam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380876/normal_604a9827ef48f.pdfIn PDF document text
    • http://waparudadip.mywebcommunity.org/55646829516.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368750/normal_60502453ef96a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388178/normal_60603eb760548.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381737/normal_5ffb181d152a0.pdfIn PDF document text
    • https://watagejikifawup.weebly.com/uploads/1/3/4/5/134589749/2f8dd34ec6c1edf.pdfIn PDF document text
    • http://xogavuw.medianewsonline.com/the_lost_world_arthur_conan_doyle.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/5235a3b8-d2d4-4442-9557-76b2c92a5bdf/jilififobegowabuxalozoloz.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/easy_jazz_guitar_chord_progressions.pdfIn PDF document text
    • http://rodisasedozax.myartsonline.com/bsc_nursing_4th_year_syllabus_ruhs.pdfIn PDF document text
    • https://s3.amazonaws.com/vazisi/wanuvekutisaju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e56ddbb8-da6d-4af8-a60f-0169987b5d08/what_is_catholic_definition_of_grace.pdfIn PDF document text
    • http://moxuzaridob.onlinewebshop.net/68994252775.pdfIn PDF document text
    • http://jujuletofu.onlinewebshop.net/intestinal_obstruction_pathophysiology.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a368fc-8896-469e-881c-1780496d488e/sony_cdp-cx355_door_belt_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da7a984a-2409-407d-9475-c3c7b5019a91/31397218404.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/31038d67-2d0c-4db3-8cf1-27d36c68056a/miller_spectrum_375_specs.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF564 5284 bytes
SHA-256: e63d8140abe9b8da37e726993c5eb3aeeb9c6c39b6d5ab2a01f4c9f08e426c0d
font_01_sfnt_off000107e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107E5 5476 bytes
SHA-256: 3ff185b94cd5ae0065924bd27bda9fb87dfee78ab28202c893bc14dc984f5e6b
font_02_sfnt_off00011a7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A7C 10676 bytes
SHA-256: 085910e593b353b01e22d2cfba4318efea048579ff1cab99d6b59f15e7b4d39c