Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cce013e8f7d9482…

MALICIOUS

PDF

78.6 KB Created: 2021-03-31 00:41:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: fc57a9d9ac9879e96dfe5704ba6c96ca SHA-1: 623fb7d43b62c5caa53a4580e69106a0efd136ee SHA-256: 8cce013e8f7d9482f92a9f927213cf35d384e26296389e0fdfaa9516850e08a1
126 Risk Score

Malware Insights

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

This PDF document contains numerous embedded URLs, many of which point to disposable hosting and are part of a link farm. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a high likelihood of malicious intent, specifically to redirect users to potentially harmful content. The ML classifier and ClamAV detection further support its malicious nature, classifying it as a phishing or trojan PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://seumenha.ru/strik?utm_term=world+history+timeline+major+events PDF link annotation
    • https://cdn.sqhk.co/ridijafugemi/fSjh9gf/math_worksheets_grade_6_ratios.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491665/normal_5fd95d95d8ec5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408704/normal_6046ad013d2a5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387427/normal_601f5a4b164b4.pdfIn PDF document text
    • http://rasiride.22web.org/kigatipavopob.pdfIn PDF document text
    • https://cdn.sqhk.co/sutekepape/jgCVjgf/april_current_affairs_2019_adda247.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/dibxIK5/rolefotum.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_6043b99409f4d.pdfIn PDF document text
    • https://cdn.sqhk.co/noperizapewo/is6gggf/aesthetic_videos_for_tiktok_baddie.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vazirap.rf.gd/neloxobimagomeg.pdfIn PDF document text
    • https://44407f20-7244-4107-9544-84d8151b6f9a.filesusr.com/ugd/8508de_911534837ef74d8ea4a1c23b74cfb3ba.pdf?index=trueIn PDF document text
    • https://bc260b4e-efc2-469d-9102-9c7234992d76.filesusr.com/ugd/b1b3ad_741c8c1d426c4ef7acc82f4f425beacc.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/bokizinusapojabejatopav.pdfIn PDF document text
    • http://bobosuvediv.epizy.com/48504186803.pdfIn PDF document text
    • https://s3.amazonaws.com/vixuwogetiv/58978517081.pdfIn PDF document text
    • http://dedeseb.rf.gd/makro_specials_april_2020.pdfIn PDF document text
    • http://dimonejoxu.rf.gd/rusogutodukinawegefu.pdfIn PDF document text
    • https://083189c9-8220-4687-a375-57be19a37228.filesusr.com/ugd/909b15_c421ef0ba55b423a89e0f22146897d0a.pdf?index=trueIn PDF document text
    • http://sijopar.epizy.com/channel_13_news_orlando_reporters.pdfIn PDF document text
    • https://s3.amazonaws.com/bejideba/astonish_oven_cleaner_safety_data_sheet.pdfIn PDF document text
    • http://wonegesaf.epizy.com/swift_data_structure_and_algorithms_erik_azar.pdfIn PDF document text
    • https://s3.amazonaws.com/tiluwisulepam/fexaditalexumefime.pdfIn PDF document text
    • https://s3.amazonaws.com/tokit/can_we_use_ps3_controller_on_ps4.pdfIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_2302411be94943eb9de23c6661dcb3c7.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_off0000f4f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4F4 5316 bytes
SHA-256: 5b55ff4e261ed7945f505ebf16299749d6a172b252bd79c342bc2b1301bd9232
font_01_sfnt_off000106f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x106F2 10568 bytes
SHA-256: d309f1877397ecf6e87ae01332c5909c913adb5512c59ab86816e32872a3dc2e

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