Malicious PDF — malware analysis report

Static analysis result for SHA-256 c18c645ef8de74ee…

MALICIOUS

PDF

78.2 KB Created: 2021-03-10 15:01:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 029b206ce99f29d6426a2aed8aa75e6b SHA-1: 2f3b3db4011fa474736d58f7d6e5834d97c7dba3 SHA-256: c18c645ef8de74ee8f7248c280bb2be2045e838f2a7513faec7b937afb1fcd67
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI that points to a suspicious domain, identified by ClamAV as Pdf.Phishing.Trojan. The ML classifier also flagged this PDF with high confidence. The document body, though heavily obfuscated, suggests a lure related to performance beliefs, likely intended to trick the user into visiting the malicious URL. No scripts were extracted, but the presence of an external URI and the overall detection profile strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dafemum.ru/123?utm_term=irrational+performance+beliefs+inventory
    • http://appletopshop.ru/17129880779huh5g.pdf
    • https://cdn-cms.f-static.net/uploads/4470220/normal_6045068f7c0c5.pdf
    • http://suzamakulamuj.mypressonline.com/pizuwukejare.pdf
    • https://static.s123-cdn-static.com/uploads/4407070/normal_6001fef07d627.pdf
    • https://cdn-cms.f-static.net/uploads/4366032/normal_602c135085b7f.pdf
    • http://sehq.xyz/67173678800tideq.pdf
    • http://proita.space/what_is_the_most_reliable_washer_and_dryer_brandsuphx.pdf
    • http://momentikshop.space/what_is_a_central_processing_unit_in_computer_science8leaw.pdf
    • https://cdn-cms.f-static.net/uploads/4408476/normal_601fba0c588fa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://lugivodunoxasi.atwebpages.com/john_deere_lx255_service_manual.pdf
    • https://ebd73b9a-b255-48a5-b781-2bd84b483b4c.filesusr.com/ugd/956c05_b945c988fbbf456b8350f73f6a2aa5cb.pdf?index=true
    • https://uploads.strikinglycdn.com/files/40be41a6-d8a5-434c-80ff-c3babfcccac0/sakinelifof.pdf
    • http://vasakuzepilaxi.onlinewebshop.net/wufezoginefefotenegizi.pdf
    • https://uploads.strikinglycdn.com/files/f284c964-00f1-4817-bb7d-1d7d07023a52/wall_street_journal_delivery_issues.pdf
    • http://japamitafixe.myartsonline.com/guxevoximovap.pdf
    • https://uploads.strikinglycdn.com/files/1ea68e6f-1644-49d6-b111-cb76dcf1cb57/95479532069.pdf
    • https://uploads.strikinglycdn.com/files/0a91c0cd-72e6-4e3c-a957-de007c372982/cuntas_caloras_debe_consumir_una_persona_al_da.pdf
    • http://vuzuwukef.atwebpages.com/chief_eval_midterm_bullets.pdf
    • https://98350ace-7ac4-4f38-a9d9-579fdad8050b.filesusr.com/ugd/9b2d9b_53eccfd81bc444a9b094094d390855d7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e16a7d1a-5444-4c5a-83bc-fe18308a1c8e/romantic_fantasy_books_2020.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_off0000f373.bin
edd8a0977c44c84c7b91f9fdded265b6b97d107dc2f0fdbe4934004a59d7fbe9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF373 5400 bytes
font_01_sfnt_off000105c3.bin
0573facd656024cdb46c9b1f7c48ffc2225017006288ff6300b86698c406a9fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x105C3 11192 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.