Malicious PDF — malware analysis report

Static analysis result for SHA-256 353a925e82fd494c…

MALICIOUS

PDF

73.5 KB Created: 2021-04-09 22:27:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: ecdd5c32df8030a75543e10440ec546a SHA-1: a3acdc7efdffbc9cb6f4562aebaa0e05275d5c0f SHA-256: 353a925e82fd494ce9529201c90e1cf7e4acb9e4ea97e7cb9472f2b0eff22e00
126 Risk Score

Malware Insights

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

This PDF document is classified as malicious by ML and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, with one prominent URL pointing to 'ponafet.ru', suggesting a redirection to a malicious site. The document's structure and the presence of external URIs indicate an attempt to lure the user to a potentially harmful external resource, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=philips+avent+microwave+steam+sterilizer+instructions+how+much+water PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4366364/normal_6002672eecd6b.pdfIn PDF document text
    • http://creamwalls.online/sofodilah0z66.pdfIn PDF document text
    • http://rastet-malysh.ru/tasazarukovepakopojebokkkxuo.pdfIn PDF document text
    • http://stnold.com/what_is_the_best_powershot_camera4qwos.pdfIn PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/f28257f78.pdfIn PDF document text
    • https://pujawemufupu.weebly.com/uploads/1/3/2/6/132680931/8346873.pdfIn PDF document text
    • http://giveaway2020.info/kaduwaxipafusumebqz8k.pdfIn PDF document text
    • http://momentshop.website/action_verbs_worksheet_grade_42zmcy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375070/normal_605b0d03263c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421611/normal_606148b25801b.pdfIn PDF document text
    • https://fubareno.weebly.com/uploads/1/3/1/4/131482864/a6d904f10148d55.pdfIn PDF document text
    • https://bovimifukid.weebly.com/uploads/1/3/4/8/134882826/6877353.pdfIn PDF document text
    • https://vuderuxedus.weebly.com/uploads/1/3/4/6/134692959/tadupejajubiwa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a2e2efd-b087-43bb-961f-1e0b945dd2b9/brandon_burlsworth_accident_who_was_at_fault.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/como_hacer_amigos_e_influir_en_las_personas_completo.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/tuzexemolaw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/657dcb66-3d9e-401b-b0db-907bbb850842/4280452361.pdfIn PDF document text
    • https://s3.amazonaws.com/nilititonawafim/blue_eyes_1080p_video_song_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4e5ae9b5-ab45-4e3b-82d6-ac1ed86e501e/dorerofivivazufe.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/cant_get_hp_printer_to_connect_wirelessly.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28871f36-d89c-49bf-b595-87c037c683b5/vezuzux.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_off0000d62a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD62A 2900 bytes
SHA-256: 9c84aca5171cf4522e1fd23f3e5391e17c8e645cdcb740b4c3036af6865bd014
font_01_sfnt_off0000e06f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06F 5376 bytes
SHA-256: eb5d4980cc42cc39ef0eb3e382374de2cee17f72e0a08042a1b2f0c09962a1f1
font_02_sfnt_off0000f2aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2AA 10760 bytes
SHA-256: c14d266f3267cd8c12184fc9e83e96c8a0ca8f31de0e765bfef47509842bd832

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