Malicious PDF — malware analysis report

Static analysis result for SHA-256 193ced6bdab89516…

MALICIOUS

PDF

129.8 KB Created: 2021-05-02 20:55:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 58636221bfc7d6758332b76ca432967b SHA-1: f954bd8b6d3010479390482d61a4a25811e88bb9 SHA-256: 193ced6bdab89516a5262fca60d57f46d3d466356dd5a7a0ebfcfe9694c3c5b0
126 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. The document contains numerous embedded URLs pointing to disposable hosting and link farms, indicating a likely phishing or malware distribution attempt. The presence of external URIs and the 'link farm' heuristic strongly suggest the document's purpose is to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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://fokemale.ru/strik?utm_term=does+hulu+have+one+punch+man+season+2+dubbed PDF link annotation
    • http://clubstore.info/26380979909brxza.pdfIn PDF document text
    • http://cartest.pro/hit_the_road_jack_piano_sheetsi3jb2.pdfIn PDF document text
    • http://zuviwadakaji.22web.org/xokusodubokagofewob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368782/normal_5fcbdf2423134.pdfIn PDF document text
    • http://rewita.fun/craftsman_chainsaw_carburetor_kit8m2ts.pdfIn PDF document text
    • http://lbaranaydin.com/39815712469jewa8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408702/normal_5ff3f9d9559c7.pdfIn PDF document text
    • http://sport-stavki.fun/hi-_lex_corporation_annual_reportuy745.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406213/normal_5ffae15adf099.pdfIn PDF document text
    • http://cardioactiveufficiale.site/where_is_lucifer_named_in_the_biblesho96.pdfIn PDF document text
    • http://help-copyrightservice.xyz/37100298484xre0g.pdfIn PDF document text
    • http://winoorama.website/pathstone_middletown_ny47l5o.pdfIn PDF document text
    • http://workbykoder.xyz/lurofojh7qwa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://disefubukub.rf.gd/86212299611.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3e68a1b-1e19-4637-afd1-0b6c2d318958/laresimode.pdfIn PDF document text
    • http://serumisa.epizy.com/apostasy_report_joshua.pdfIn PDF document text
    • http://jiporiri.rf.gd/20723068817.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8b650e8-af2b-45e1-9161-c52d85c3e489/punanojedokegabeb.pdfIn PDF document text
    • http://tizivedimusos.epizy.com/daihatsu_sirion_2009_manual.pdfIn PDF document text
    • http://pafewanofa.epizy.com/ralph_ellison_invisible_man_full_movie.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8135b598-f60b-4c88-ad6d-17e6beaab6d1/watts_premier_ro-pure_replacement_faucet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f44bc74c-a201-451b-a61b-58f632d2fae4/79544256142.pdfIn PDF document text
    • http://numumodi.epizy.com/mezazojisolaxubif.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000115ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x115AC 49000 bytes
SHA-256: 9b4e007b465928f036126e21edcc1a97d77b11be639517bc3d841fde8f425c5f
font_01_sfnt_off0001abfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ABFB 5548 bytes
SHA-256: 31549b01371c8aa1e6efbaa9a2ec926a2b87d084975c7b2daf32769e9212e153
font_02_sfnt_off0001beb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BEB7 5068 bytes
SHA-256: 31a8c599af432428a9d8fe7ffa99367cb6f82c2b8d7930ae39029451072925d1
font_03_sfnt_off0001d167.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D167 11924 bytes
SHA-256: c8b1de4cc53262f2dc75abc2a4fc60ec1ee7533850b28ae11ca007e0421519eb