Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed7329ad3726aa83…

MALICIOUS

PDF

79.6 KB Created: 2021-03-29 09:13:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 75aded79f15ec4ba22b117f7e5120b7b SHA-1: 6858ae4258b7292dd40e17d4a8900063190e6420 SHA-256: ed7329ad3726aa8396c3f2dba1cb256215c24392225ce43f12669610ce22ee7c
126 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous embedded URLs, with at least one, 'https://xezojetit.ru/award?keyword=teori+utilitarianisme+pdf', appearing to be part of a phishing or scam campaign. The PDF's structure and the presence of external links suggest it is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://xezojetit.ru/award?keyword=teori+utilitarianisme+pdf PDF link annotation
    • https://xumotisububilup.weebly.com/uploads/1/3/4/5/134591263/lufofomuriw.pdfIn PDF document text
    • http://lnstagramverifiedsbadgesforms.com/how_to_make_your_own_3d_printsky9pq.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495241/normal_6011d959d3a8b.pdfIn PDF document text
    • http://sepoxudozixo.sportsontheweb.net/ed_sheeran_with_justin_bieber_i_dont_care_lyrics.pdfIn PDF document text
    • http://housefashion.ru/tuxevugonefikenicrckm.pdfIn PDF document text
    • http://chaptejvxz.fun/nudekixiginezomaxeradou8me8.pdfIn PDF document text
    • http://zeraseb.66ghz.com/drawing_3d_shapes_worksheets_grade_6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4486534/normal_601ebde1eb7ef.pdfIn PDF document text
    • https://fosobezi.weebly.com/uploads/1/3/4/8/134898374/jidelebura.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_60136d15d2dc4.pdfIn PDF document text
    • https://xapotitiguwux.weebly.com/uploads/1/3/4/6/134668809/limowezuwoke_doroziboju_fepumemufez_jozirisovisusad.pdfIn PDF document text
    • http://hotita.space/62862473218xorq1.pdfIn PDF document text
    • http://evilcheats.fun/katuxafufisomizakajirkelz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://naxamuj.epizy.com/31029597543.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22803ca6-7d16-4e37-ad0c-fee53f7f071c/vukoluboziwakotebikavezej.pdfIn PDF document text
    • http://lapabogi.rf.gd/2005_honda_pilot_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/66b74e8f-3c15-4637-9d0e-246410be93fc/gagabipoge.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0134586-fd7e-4abe-8dc1-bda9cda39aa0/27280303895.pdfIn PDF document text
    • http://zowabito.rf.gd/livali.pdfIn PDF document text
    • http://fulabal.epizy.com/a_piece_of_advice_and_admonition_for_the_woman.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c5e789c-fbd4-46df-8a4d-0ae1467cd9ef/scag_mowers_36.pdfIn PDF document text
    • http://famekuputoda.myartsonline.com/58067999224.pdfIn PDF document text
    • http://wodowepakimeko.onlinewebshop.net/99186038400.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faf8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAF8 5136 bytes
SHA-256: ae256964d264cf45fb2911738138697975540380e3ab5eae77ec83c8d170c530
font_01_sfnt_off00010c57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10C57 10700 bytes
SHA-256: ef5e3d1e5670de518de315708bf353f82c1fbc378992e126f069841b7208aa7d

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