Malicious PDF — malware analysis report

Static analysis result for SHA-256 e6903ee567ab95d2…

MALICIOUS

PDF

91.7 KB Created: 2021-03-29 11:37:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 66e1cce31e4784648711a4c3cf067bb3 SHA-1: 158fda54d1314b4e118489a8450802c1c070b8aa SHA-256: e6903ee567ab95d26f797b2ed359bd3ccec459790c1a22336e3546919a248844
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with a primary suspicious URL being https://soxebez.ru/wix?keyword=tos+guide+2020, which is likely used for phishing or malware distribution. The document's content, though heavily obfuscated, suggests a lure related to 'Tos guide 2020', aiming to trick users into visiting the malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://soxebez.ru/wix?keyword=tos+guide+2020
    • http://mutujejeturuduf.medianewsonline.com/kulawod.pdf
    • https://gujejitemisadud.weebly.com/uploads/1/3/4/3/134354005/bosuzogejuvewu-tixevexa.pdf
    • https://cdn-cms.f-static.net/uploads/4369191/normal_603aa38ececbb.pdf
    • http://fijazubelanulek.mywebcommunity.org/jexaninidefube.pdf
    • http://dulexip.22web.org/tenomiroriliseminates.pdf
    • http://sadinexiwa.mygamesonline.org/windows_server_2012_r2_download_iso_32_bit_french.pdf
    • https://xikofekukinakij.weebly.com/uploads/1/3/2/6/132681309/fesetepef.pdf
    • https://static.s123-cdn-static.com/uploads/4415331/normal_5fff051135e02.pdf
    • http://kamodokawi.iblogger.org/36982682622.pdf
    • https://static.s123-cdn-static.com/uploads/4454048/normal_5ff85b29007af.pdf
    • http://niwizonoleror.mywebcommunity.org/analytical_essay_writing.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://pofaserowezisu.epizy.com/cambridge_academic_english.pdf
    • https://uploads.strikinglycdn.com/files/ae680a22-c99d-4715-96a8-99ede4a33db5/when_would_you_use_tcp_ip.pdf
    • http://gakamaxoluzes.atwebpages.com/atorvastatin_lipitor_davis.pdf
    • http://lojabupabavize.onlinewebshop.net/how_to_get_a_replacement_state_of_california_benefits_identification_card.pdf
    • http://tumofif.rf.gd/zudakamen.pdf
    • https://uploads.strikinglycdn.com/files/77fe0f7b-3326-43ca-88cf-0d3946a0cad8/canon_200d_camera_price_in_pakistan.pdf
    • https://uploads.strikinglycdn.com/files/4bfd9879-1edc-4c73-83c9-8a9890cc0046/maze_runner_3_full_movie_download_in_hindi_480p_mkv.pdf
    • https://uploads.strikinglycdn.com/files/1207f3c6-6336-494b-878b-f20f9237a8ea/20606873392.pdf
    • https://uploads.strikinglycdn.com/files/e7ffe6b6-e15a-4cf1-bd96-2bb215c19e31/how_do_you_use_a_smoky_mountain_electric_smoker.pdf
    • http://savefativiluz.epizy.com/menofisimekilunu.pdf
    • http://tososite.onlinewebshop.net/the_hollow_men.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001138f.bin
b9b329ee08f12c8b1fdfb70c5dc23a7dd523da63f6916989eedd9c26b7c906c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1138F 4876 bytes
font_01_sfnt_off00012443.bin
02ba564f9069cb4b73bacd0f9281503102412271298d708db73d8aeca1e33be8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12443 11300 bytes
font_02_sfnt_off00014b3c.bin
9e1271d681207e96fe60c94df920a27091a957dc81e2614e9e6235263a34fce6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14B3C 16068 bytes

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