Malicious PDF — malware analysis report

Static analysis result for SHA-256 285ab8307b8375a8…

MALICIOUS

PDF

77.0 KB Created: 2021-03-22 07:22:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 57f4a46e08ac25f1d10177fdadb9f976 SHA-1: 23dd2b05b2518ab38429a25a1476263d5782500f SHA-256: 285ab8307b8375a8c2f55299153aeac4ab1613a7c431d14ccd159fe79f84f9ae
126 Risk Score

Malware Insights

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

The file is a PDF document identified as malicious by ML classifiers and ClamAV. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'lozipotod.ru'. The PDF structure and embedded links suggest a phishing or malware distribution attempt, masquerading as a benign document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://lozipotod.ru/award?keyword=synonyms+and+antonyms+worksheet+for+grade+5+pdf PDF link annotation
    • http://mavpa.fun/lukufikekitokixiluxufu65u26.pdfIn PDF document text
    • http://creditreportusa.info/kokoro_natsume_soseki_amazonniey6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450724/normal_600316e1a3840.pdfIn PDF document text
    • http://bcpzon4segurabetaviabcp.com/bible_old_testament_and_new_testament_differencezr41h.pdfIn PDF document text
    • http://pressit.space/what_are_non_projected_mediagbt75.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443578/normal_5ffc66d324bf8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454971/normal_60413095cfae0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fa886832-b9e3-4ce5-a98c-97da2614721f.filesusr.com/ugd/9f8050_0f09c0adfec843c68c6b9c1a2c5fcbfb.pdf?index=trueIn PDF document text
    • https://d572dbd6-ec42-402e-884a-3db6daac2318.filesusr.com/ugd/6a558d_1b750d2de99e4bbb8efef1c44313092a.pdf?index=trueIn PDF document text
    • https://77a80da1-97a3-4b40-ba11-54c6d232eb66.filesusr.com/ugd/39a0fd_b862342cea2d47a8bed937872ca7dd44.pdf?index=trueIn PDF document text
    • http://latisikonif.epizy.com/fifelisipidaf.pdfIn PDF document text
    • http://bitugoxopezuwu.rf.gd/93275379113.pdfIn PDF document text
    • https://95fbbc11-640f-4658-acdf-6e09da746871.filesusr.com/ugd/e42ee3_9a29a7d8b6f04206b2fe2433861d7039.pdf?index=trueIn PDF document text
    • http://lesodabat.epizy.com/86634983171.pdfIn PDF document text
    • https://0aed7b51-d02b-4864-a6bb-b478bb809667.filesusr.com/ugd/fbdaab_25bf8cf13fc540058465f9fd9ceec7eb.pdf?index=trueIn PDF document text
    • https://6f2fb29c-15f2-4b08-b525-3eb91a7f0a41.filesusr.com/ugd/c3548c_835251ebe4aa4450848ff5b1ad081e77.pdf?index=trueIn PDF document text
    • http://geluzejezi.epizy.com/rojawa.pdfIn PDF document text
    • https://dda5c79a-a75d-44d9-a006-48dec3bfe172.filesusr.com/ugd/115d6e_dd2e655183ac4641a8f4a091904d1310.pdf?index=trueIn PDF document text
    • https://ebc1add8-0b9d-418e-9e4a-1e287827e933.filesusr.com/ugd/ab63e3_f49344d4170c4297925e8e27d461d221.pdf?index=trueIn PDF document text
    • https://42e65457-ec34-4553-8979-78b6e302f774.filesusr.com/ugd/f1976d_01230888366a4732bcb6095058e71d6f.pdf?index=trueIn 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eca9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA9 5908 bytes
SHA-256: a2406820179cb353d61414755029551a452c4d6c01621a5f016366044915faa3
font_01_sfnt_off000100b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100B7 11232 bytes
SHA-256: 1d967e2df260313cf15c6956cc7bbd102b3c58460e8f36f9fac06c6665e3befe

Open this report in the interactive analyzer, or submit your own file for analysis.