Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c87fd4e7f597fc2…

MALICIOUS

PDF

76.9 KB Created: 2021-03-11 16:42:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e9efb299833541f649a78c5ec31b2859 SHA-1: 3ca60fbb4fc41b42f4511d2a3edb6827da0bab6d SHA-256: 5c87fd4e7f597fc2f3382d2cbe33a0cae6da62ced893c79e31c375233d45ecd6
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ClamAV and an ML classifier. It contains an embedded URL pointing to 'lozipotod.ru', which is likely used to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, contains keywords related to supplements, suggesting a lure.

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://lozipotod.ru/wix?keyword=cusack+protocol+supplements
    • https://static.s123-cdn-static.com/uploads/4452588/normal_5fd06327d2959.pdf
    • http://todibojoposufu.iblogger.org/59402997032.pdf
    • http://zinulofuwobixum.iblogger.org/40167649917.pdf
    • https://static.s123-cdn-static.com/uploads/4368248/normal_5ffae94a1fd7c.pdf
    • https://cdn-cms.f-static.net/uploads/4470552/normal_5fea04e21b9af.pdf
    • https://cdn-cms.f-static.net/uploads/4410727/normal_602b42be6e68a.pdf
    • https://static.s123-cdn-static.com/uploads/4381081/normal_5ffff296e5d52.pdf
    • https://cdn-cms.f-static.net/uploads/4384039/normal_6036b01ea09bc.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/nowonovege/buzil.pdf
    • https://uploads.strikinglycdn.com/files/93513115-f9ab-405e-b70e-7d6dbb17ddb3/34922176839.pdf
    • https://907864b8-ab38-4b43-b195-7646ee37c451.filesusr.com/ugd/c4b402_fd461a9d10c74754b8208e29f7833bd0.pdf?index=true
    • https://s3.amazonaws.com/fowikorejodi/31942963156.pdf
    • https://uploads.strikinglycdn.com/files/2cb28744-8b95-4307-91c4-c304b7231c19/87644566882.pdf
    • https://s3.amazonaws.com/nevowimo/juwomajiso.pdf
    • http://ruxurosagogaru.epizy.com/19737548642.pdf
    • https://uploads.strikinglycdn.com/files/e42637a6-57f3-4a19-bda1-85fc107ad5df/why_is_my_canon_g2010_not_printing_black_ink.pdf
    • https://uploads.strikinglycdn.com/files/247b32e1-1993-4339-8d4d-dfaa6538707a/obdlink_lx_obd2.pdf
    • https://uploads.strikinglycdn.com/files/f1dfb541-fcf5-4d34-a7e5-567a4a878248/nyx_cant_stop_wont_stop_foundation_shades.pdf
    • https://s3.amazonaws.com/vesubodufisi/cafeland_apk_1._9._2.pdf
    • https://s3.amazonaws.com/kawotexulozax/chemistry_module_10_test_answers.pdf
    • http://nikejubefip.epizy.com/5th_class_english_guide_book.pdf
    • https://f11c4bf2-12a6-49f8-9590-07a94b689168.filesusr.com/ugd/11276f_318fb74f4aeb43f8ad0a91f98c819a91.pdf?index=true
    • 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_off0000f229.bin
411c128e0917c1899c792feec9cd63689dbd7470a4b9918df2fd7ea674495b81		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF229 5048 bytes
font_01_sfnt_off0001033e.bin
1d077237cdf0d0a48287bfdd8d2d19eb65e1179e0614eb360bff56c705aa278d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1033E 10260 bytes

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