Malicious PDF — malware analysis report

Static analysis result for SHA-256 63f22dc949067b60…

MALICIOUS

PDF

76.7 KB Created: 2021-03-05 10:24:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6d7e5328d02fa7fcd334c85e3460db58 SHA-1: 7039bf23fc947170a3930ac4b2f2d8aa2b658504 SHA-256: 63f22dc949067b60168a3a05e5683c564b2accb626ee278d0f00db723c4f5638
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ClamAV as a phishing trojan. The ML classifier also strongly indicated maliciousness. The document's content, though heavily obfuscated, appears to be a lure related to product support, aiming to trick users into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/123?utm_term=push+power+protect+sony+mhc-rg88
    • http://gta-msk.ru/factorial_notation_worksheet_with_answerslbqrg.pdf
    • http://13millions.store/tumasanirdq4a.pdf
    • http://lumobumekola.getenjoyment.net/wamolujisebusipewimosi.pdf
    • https://static.s123-cdn-static.com/uploads/4413346/normal_5ff7e97991f3b.pdf
    • http://dmdmassage.com/apc_back-ups_500va_bx500ci_iecgvhxe.pdf
    • http://dommasters.site/lamuwitu6g4x.pdf
    • http://jonebukusopovet.mygamesonline.org/fosejezujazapibemopimub.pdf
    • https://static.s123-cdn-static.com/uploads/4426408/normal_600560f051402.pdf
    • https://static.s123-cdn-static.com/uploads/4489969/normal_5fca1750998f9.pdf
    • https://static.s123-cdn-static.com/uploads/4485296/normal_5fcda19870eb1.pdf
    • http://re-capital.ru/67237966749tyhom.pdf
    • https://cdn-cms.f-static.net/uploads/4365542/normal_6010a1f717932.pdf
    • http://dogalijun.scienceontheweb.net/what_are_the_basic_operations_of_mathematics.pdf
    • https://static.s123-cdn-static.com/uploads/4454819/normal_5fc87af337752.pdf
    • http://mapotilij.mygamesonline.org/can_you_day_trade_stocks_on_robinhood.pdf
    • http://fepaporipevari.mypressonline.com/66923923160.pdf
    • https://static.s123-cdn-static.com/uploads/4454977/normal_5ff66292e08c0.pdf
    • https://static.s123-cdn-static.com/uploads/4424632/normal_5fc96d141a29e.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fegoluvarelewum.myartsonline.com/syncrowave_250_pulser.pdf
    • http://vekemelegewimo.atwebpages.com/how_to_pair_turtle_beach_stealth_700_bluetooth.pdf
    • http://kugukokoner.myartsonline.com/fumofekogezupuwa.pdf
    • https://s3.amazonaws.com/bawalidamovidud/barca_vs_man_u_highlights.pdf
    • https://s3.amazonaws.com/rodiligarexo/html_editor_windows_forms.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed9f.bin
81b8c657138eeec621f17410f20f344dfbd65360e2d00d3bc422f0eed726f852
pdf-font-stream PDF embedded font (sfnt) at offset 0xED9F 5524 bytes
font_01_sfnt_off00010062.bin
f84a22f312bc314c5e1037c42ab1eb45699d15428e72770014b01326c306a232
pdf-font-stream PDF embedded font (sfnt) at offset 0x10062 10916 bytes