Malicious PDF — malware analysis report

Static analysis result for SHA-256 6953fba8fe0fd56b…

MALICIOUS

PDF

82.1 KB Created: 2021-04-05 19:19:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0f6efb719586fe8dd97506d721e16c3 SHA-1: ea224acf4b3e97f49d1cd9ffa4c2b822ed8dc1ae SHA-256: 6953fba8fe0fd56b66377e3982a531991d6deaa346ea683b64e1814f990fda3c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URLs, such as 'https://zajinet.ru/123?utm_term=aviation+security+pakistan+pdf', suggest a phishing or malware distribution attempt by luring users to external sites. Although no scripts were explicitly extracted, the PDF structure and heuristic firings point towards a malicious document designed to exploit users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/123?utm_term=aviation+security+pakistan+pdf
    • http://getplafond.xyz/37953849581el53j.pdf
    • http://movawizaxaxato.mywebcommunity.org/how_to_determine_allowable_bending_stress.pdf
    • http://bellissimo.online/puvanebofuleliwefafisui.pdf
    • http://fomijegi.mypressonline.com/29948044657.pdf
    • http://reduslimitalia-official.site/468316243200njln.pdf
    • https://cdn-cms.f-static.net/uploads/4456999/normal_60442f95e9bef.pdf
    • http://luziniwanemek.sportsontheweb.net/86282623532.pdf
    • http://art-practice.org/can_a_tracfone_be_unlocked0stl0.pdf
    • https://cdn-cms.f-static.net/uploads/4407747/normal_6032a92b85edd.pdf
    • https://static.s123-cdn-static.com/uploads/4454420/normal_5feb01364da28.pdf
    • https://cdn-cms.f-static.net/uploads/4459164/normal_60226868f039e.pdf
    • https://cdn-cms.f-static.net/uploads/4402520/normal_60465939ce964.pdf
    • http://fishland.store/papujez10y.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/povodijirig/mississippi_driving_learner_permit_rules_nyc.pdf
    • https://uploads.strikinglycdn.com/files/3c36bbfa-c428-4d07-8c92-9b223ec19e5c/nedefobepuxezuserobomu.pdf
    • https://s3.amazonaws.com/jutenojamega/autocad_plant_3d_spec_editor.pdf
    • https://s3.amazonaws.com/xofalepelala/20_facts_about_jamaica_kincaid.pdf
    • http://bopewexe.onlinewebshop.net/46490115397.pdf
    • https://uploads.strikinglycdn.com/files/6e3aee02-7326-424a-b8d3-cc3df58c3a00/what_type_of_government_did_the_soviet_union_have_during_ww2.pdf
    • https://s3.amazonaws.com/bokelur/focusrite_scarlett_18i8_bundle.pdf
    • https://s3.amazonaws.com/dobesogum/nemud.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e5ea.bin
d2975fc8cb48bd6255657bd1d384f55a7548df3ea9ec55070e5035ca2bdc843b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE5EA 5332 bytes
font_01_sfnt_off0000f831.bin
f32a8bcc239b053bc65500bcb8d7b4d37b371b37be93010e884f1fec4cb587c5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF831 10868 bytes
font_02_sfnt_off00011dab.bin
d97753c813e8527769e95f75fd2c8d9a2aac25be18197b11ff81a0f29e9dd29a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11DAB 18468 bytes

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