Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb22b20cda027198…

MALICIOUS

PDF

86.8 KB Created: 2021-03-10 08:44:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6c6551c13c5a62509a0b94b2119921d0 SHA-1: 59d64b1c48ec46d58b0e9c966e3855450f420cbc SHA-256: cb22b20cda027198752b73a5ba4c410ad1234b2f2b72a0c7856dc8740adbe6ac
96 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://zajinet.ru/wix?keyword=toro+22+personal+pace+lawn+mower+manual', which is likely part of a phishing or redirection scheme. The document body, though partially obfuscated, suggests a lure related to a lawn mower manual, aiming to trick users into clicking the malicious link.

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/wix?keyword=toro+22+personal+pace+lawn+mower+manual
    • http://pemizirevubel.mywebcommunity.org/64006741720.pdf
    • http://nomudepalak.medianewsonline.com/mufil.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://45dcde1a-aed5-4138-b95e-a0f768a283bf.filesusr.com/ugd/89441e_ee27726d4883425a8a7d1698681034d0.pdf?index=true
    • https://uploads.strikinglycdn.com/files/8d9012c5-8e22-481a-8e5e-613994ba2f98/quantos_digitos_tem_o_titulo_de_eleitor.pdf
    • https://s3.amazonaws.com/mejigavukolu/filosuz.pdf
    • https://uploads.strikinglycdn.com/files/22e59413-997a-4bad-988a-1834536e2f34/91875367398.pdf
    • http://kavuduvolilazod.myartsonline.com/neumonia_por_adenovirus_pediatria.pdf
    • https://uploads.strikinglycdn.com/files/5de9f158-5667-40aa-a71a-28133cc1e1d9/survival_movies_on_netflix_and_hulu.pdf
    • https://s3.amazonaws.com/bovenotojitowe/driver_bluetooth_asus_x553m.pdf
    • https://s3.amazonaws.com/biwubeleba/unprotect_worksheet_in_excel_online.pdf
    • https://2a009ac4-5770-49f2-ae16-4ce107243443.filesusr.com/ugd/59deca_e933c9b2b6114097be1f5e795b54e7ed.pdf?index=true
    • https://a84030a7-2e48-4039-807a-383e2b7216cc.filesusr.com/ugd/c5d40f_d5105f9e69054d1199dc55321522d304.pdf?index=true
    • http://tijuvewoduga.onlinewebshop.net/5193112745.pdf
    • https://0f8fedcd-12c0-4678-86f8-e2bff7269121.filesusr.com/ugd/70e7d4_67279d9a32004c7b9eb55454c40c3f97.pdf?index=true
    • http://lixugafepujijoj.onlinewebshop.net/bantu_self_government_act.pdf
    • http://zevesijuduma.atwebpages.com/96375485916.pdf
    • http://rosajeku.myartsonline.com/vezaxidazana.pdf
    • https://f2d828cf-06d9-46ea-85af-d88b0bc20d44.filesusr.com/ugd/501a20_f876107784e84c9da179f93242598002.pdf?index=true
    • https://b7e73dfe-ad35-4791-b4f7-7500f5b7882c.filesusr.com/ugd/bc79a4_64d8a1dfe93943cd9ec10a3a50f83a90.pdf?index=true
    • https://uploads.strikinglycdn.com/files/cb3ca2af-2f3c-44ff-9699-28f2f5e97abb/shoulder_active_release_technique.pdf
    • https://69f6cc44-9198-4e41-bafa-43503dba92bf.filesusr.com/ugd/dec231_1f270af117d54a718ad9eb83fbb5c4e7.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_off00011753.bin
22ee484922926aabf054f1fb9966e8904d06e05a69bb5be656a9dfd34749d8bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11753 5252 bytes
font_01_sfnt_off0001292a.bin
bdc3a9fc6b96ed4991fc98bee7373dd54d991452cce5ee8f3ae872490c5ff44d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1292A 10660 bytes

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