Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ae5787e689ab8ad…

MALICIOUS

PDF

84.0 KB Created: 2021-04-04 06:41:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: db2b7609510791fafe0a29634c4494f7 SHA-1: a7987203e156db4dbc532c4f9983181fd0df16c4 SHA-256: 1ae5787e689ab8ad5f1503b8f222108330da01df34892333cdc4d11622f7d5b9
126 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URIs, including one pointing to 'botokaw.ru', which is likely used to redirect users to malicious content or phishing pages. The PDF structure and embedded links suggest it functions as a lure, potentially for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://botokaw.ru/wix?keyword=knives+out+mod+apk+android+1 PDF link annotation
    • http://lg-copyrightforms.com/what_do_you_use_to_clean_a_glass_stove_tophx4f7.pdfIn PDF document text
    • http://topuniversityru.fun/xaderexunmx8ij.pdfIn PDF document text
    • http://soldonlakewood.com/kilulvf4f0.pdfIn PDF document text
    • http://stroy-level.ru/the_17_sustainable_development_goals_explainedlj12n.pdfIn PDF document text
    • http://gemitufelog.22web.org/90559282159.pdfIn PDF document text
    • http://merishwheelrecords.com/32164403882k51r0.pdfIn PDF document text
    • http://kupiokno.su/datawamegimigopipeoo0fe.pdfIn PDF document text
    • http://clubstore.pro/gojutojobemovowijavebx3tg.pdfIn PDF document text
    • http://welogotodamiris.22web.org/34152349904.pdfIn PDF document text
    • http://xumupizaxuto.scienceontheweb.net/zogepobopogatanano.pdfIn PDF document text
    • http://socialwave.me/konibokolgai0k.pdfIn PDF document text
    • http://mogudovorezuxok.22web.org/76498889340.pdfIn PDF document text
    • http://remontnatali.ru/create_private_picture_folder_iphone9khhy.pdfIn PDF document text
    • http://bagidopivulo.mywebcommunity.org/jurnal_kinetika_adsorpsi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cf268418-7549-4780-9cff-e39e61b5276c.filesusr.com/ugd/0b1cf2_571d10c991e1481ba091169ddc3e1eb7.pdf?index=trueIn PDF document text
    • https://2ac8321c-28d8-41c8-ac7a-99137a6fe030.filesusr.com/ugd/157ee0_32d0e21ff00441dabd2dacbf1cf48cf1.pdf?index=trueIn PDF document text
    • https://858e1da1-ad31-4e5b-aec0-89c59c6c71f6.filesusr.com/ugd/6240f8_764656f7124548868c2ec3c626263cf6.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/05ee2602-047b-4e46-9013-6a8b4fdae767/48558976374.pdfIn PDF document text
    • https://4121a797-204a-431c-92a8-8e24072fb342.filesusr.com/ugd/b972d5_be3f9915396b47f79ef41c218362cb5a.pdf?index=trueIn PDF document text
    • https://0d801636-e20c-47cf-9654-f2c4f0d28fb9.filesusr.com/ugd/2e7c9c_998928128250482caa5a1300fadb6602.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/abe0adac-3210-4840-9d1f-0600514f3981/camel_in_action_book.pdfIn PDF document text
    • http://mexawuzemogo.epizy.com/armm_culture_and_tradition.pdfIn PDF document text
    • http://patabajisof.epizy.com/c_report_definition_has_not_been_specified.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f3cd9218-91ea-484a-b6fc-682d259c3cf6/echo_gt_225_trimmer_head_disassembly.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ffb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFB8 2952 bytes
SHA-256: e211f2d6e0d1bf1fd17bd5150bc2724fb7c0f1d37b1c69b855d9dcad8de34ab0
font_01_sfnt_off00010a46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A46 5216 bytes
SHA-256: 986ed5e1af92d158a7a2ce603e10be4c008f431d8b8010f72750b6a12f2ae45a
font_02_sfnt_off00011bf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BF4 11232 bytes
SHA-256: cedd1c162af433b29cd758ec41212faca6183dd906b085b0cefad93a12c15099