Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0c6fba35c9d5b71…

MALICIOUS

PDF

79.4 KB Created: 2021-03-17 09:08:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2c96db42a3d4eb64fa5f39fdf69ae4f0 SHA-1: 965215c8d5b8166162e3029f4b71905dd65c403d SHA-256: e0c6fba35c9d5b7167991c98384df9c9378d2a39c02fea14052cef134d869876
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL pointing to a suspicious domain, which is likely part of a phishing lure for a 'free gift card code generator'. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://resalured.ru/wix?keyword=free+gift+card+code+generator+no+human+verification
    • https://cdn-cms.f-static.net/uploads/4478655/normal_60306176adabb.pdf
    • http://kamaz-ftc.com/C3BCC3A7_dC3B6rt_beC59F_yayC4B1nlarC4B1_ygs_matematik_soru_bankasC4B1_indirwppjs.pdf
    • http://accueilcmb.com/will_and_be_going_to_exercises_ego4un2nkn.pdf
    • http://pasendapp.online/detorofawiseritosiviregm4a0x.pdf
    • http://ita-talia.fun/hp_designjet_500_plus_drivers_windows_xpbh1tc.pdf
    • https://static.s123-cdn-static.com/uploads/4496015/normal_60011b9dc5f8e.pdf
    • http://kvrovk.xyz/what_is_the_best_type_of_battery_for_a_mobility_scooterwgym9.pdf
    • https://cdn-cms.f-static.net/uploads/4480749/normal_600d1680c6501.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bajapovogam/test_anorexia_y_bulimia.pdf
    • https://uploads.strikinglycdn.com/files/df451e6d-3371-4262-98a8-6bbcb4f9ebce/42199661822.pdf
    • https://uploads.strikinglycdn.com/files/53961091-6569-4b7a-8803-c2905b9c3989/pulipevogarotu.pdf
    • https://uploads.strikinglycdn.com/files/a31af711-c110-442a-b37e-205d4f87fd10/india_vs_bangladesh_day_night_test_match_live.pdf
    • https://uploads.strikinglycdn.com/files/71351113-9541-48e2-a01a-6b2b290e2030/95884766461.pdf
    • https://uploads.strikinglycdn.com/files/9a7e35ba-c606-42c5-b4a3-b85a30530db9/how_to_use_hot_tub_control_panel.pdf
    • https://s3.amazonaws.com/norozovijalu/shopee_taiwan_apk.pdf
    • https://uploads.strikinglycdn.com/files/87d3bdaf-cd20-407a-8841-6841d362c634/wupumater.pdf
    • https://uploads.strikinglycdn.com/files/65986041-1734-439d-af3c-47836837d645/32359177044.pdf
    • https://s3.amazonaws.com/jaloto/button_design_template_css.pdf
    • https://s3.amazonaws.com/mesotodimus/51466958926.pdf
    • https://uploads.strikinglycdn.com/files/e2f46b0e-a1b3-40fd-be61-870a191d30d9/victorious_woman_warrior_of_god.pdf
    • https://uploads.strikinglycdn.com/files/c8c3422f-18c9-455e-ac97-bdbf3fcb116c/85800230551.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_off0000f5bd.bin
8f72150dfdffb54046535b1cf757368d31a92509da6eaa62e711f9ba3c352f73		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BD 5240 bytes
font_01_sfnt_off0001077c.bin
61835287606fb2f9a003931f2ea0fa2215aeda1d4a026024be83d2cab6b1e97e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1077C 12056 bytes

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