Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7a3c8892a85cc4…

MALICIOUS

PDF

74.7 KB Created: 2021-03-28 17:37:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 08cdce201ab8d6f3bc9a87be7685da94 SHA-1: dfdebfe13e06e93741023578b75f887ee11927d9 SHA-256: 2e7a3c8892a85cc43db0b49b9b0ab51d468df5870d08e7a67b1835e524e6890c
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. Although the document body is heavily obfuscated, the presence of the external URI suggests the primary goal is to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://seumenha.ru/wix?keyword=bosch+router+guide+rail+system
    • https://cdn-cms.f-static.net/uploads/4417049/normal_6058ae8578280.pdf
    • https://cdn-cms.f-static.net/uploads/4485702/normal_605cf1e307317.pdf
    • https://static.s123-cdn-static.com/uploads/4401515/normal_6008843ae564b.pdf
    • https://static.s123-cdn-static.com/uploads/4414678/normal_5ff565b671e97.pdf
    • https://gawofatofuwe.weebly.com/uploads/1/3/1/3/131380275/renobig.pdf
    • http://laribij.scienceontheweb.net/18188382774.pdf
    • http://gexulogoben.sportsontheweb.net/two_sides_of_effective_oral_communication.pdf
    • https://jiwujidevidu.weebly.com/uploads/1/3/0/8/130874067/dujugiferiguro.pdf
    • https://cdn-cms.f-static.net/uploads/4470685/normal_5fd7c4f78eed7.pdf
    • https://static.s123-cdn-static.com/uploads/4365653/normal_5ff5a65f8001b.pdf
    • https://cdn-cms.f-static.net/uploads/4367642/normal_6023da12f390e.pdf
    • https://zugasunisozabij.weebly.com/uploads/1/3/4/7/134759734/xapisasoje-kilebigaforolif-pesetoj.pdf
    • https://cdn-cms.f-static.net/uploads/4485714/normal_604d331b52138.pdf
    • https://metuliwilive.weebly.com/uploads/1/3/4/3/134386481/5533674.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_bd5137349d9a461d8851e86fa1a06f0c.pdf?index=true
    • https://uploads.strikinglycdn.com/files/95e9900e-3399-43b7-a557-43e8b85ae254/suwewizavudur.pdf
    • http://nowimirozox.atwebpages.com/gijugafaxuziso.pdf
    • https://39c10a3a-92c6-412a-a1bb-b8a1fc48fbc4.filesusr.com/ugd/259099_870ecaa0d9f044b0bfaaf10c28d8d2a7.pdf?index=true
    • https://uploads.strikinglycdn.com/files/b7d6b8a3-d159-40b9-89a1-b593931743a3/how_long_to_cook_cinnamon_rolls_on_pizzazz.pdf
    • https://uploads.strikinglycdn.com/files/76f78c26-df15-4bc9-b35b-f28f6886d8fb/55848101578.pdf
    • https://uploads.strikinglycdn.com/files/9f007b5f-d7bb-416b-b8f1-6a0e17b1c9b4/mofadubelefiwugovoniburo.pdf
    • http://nevabaza.atwebpages.com/computer_basics_absolute_beginners_guide_windows_10_edition.pdf
    • https://a98f38e8-5810-4fc9-be6a-c3d78c7c4f9f.filesusr.com/ugd/921909_3f476baeb6554beda801334e9269f64f.pdf?index=true
    • http://pisonepegosa.myartsonline.com/astm_d445_18.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7bd.bin
e82792698f1a9903f1c1e232317e5e9fdb800aef67142824f92b4f0172ba6f62		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BD 5280 bytes
font_01_sfnt_off0000e9b9.bin
ccc5c9ef773ff2b1652975c5e2aa6c86a748dd094b0fb7da8989c31b24cbf7a9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 10976 bytes
font_02_sfnt_off00010f26.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F26 4324 bytes

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