Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff0e7ff8f7ccc80f…

MALICIOUS

PDF

80.0 KB Created: 2021-05-03 11:13:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 52b639f926b309a120a3d0f6a8179875 SHA-1: 7c2c5c039ce39f2cd72b417555c84337ffa25c8f SHA-256: ff0e7ff8f7ccc80f260f60a92f88d875181978dbd4b384cc94ff5b25d1e56e80
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. The file contains numerous embedded URLs, many pointing to disposable hosting or link farms, suggesting a phishing or malware distribution campaign. The presence of external URIs and the PDF_SEO_DISPOSABLE_LINK_FARM heuristic further support this, as the document appears to be designed to redirect users to potentially harmful content.

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://resalured.ru/strik?utm_term=butterball+turkey+fryer+xl+basket PDF link annotation
    • https://cdn.sqhk.co/gixotagokezu/Oig2EpI/boo_at_the_zoo_columbus_reservations.pdfIn PDF document text
    • https://turamidiwirak.weebly.com/uploads/1/3/4/3/134340523/1182168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449781/normal_6038d6b75214d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367287/normal_604d0297311c5.pdfIn PDF document text
    • https://kamapapidez.weebly.com/uploads/1/3/5/9/135962567/mipaweli.pdfIn PDF document text
    • http://bullbananavannaone.xyz/90612907568uctk0.pdfIn PDF document text
    • https://cdn.sqhk.co/pekobenew/dijiiig/sepalig.pdfIn PDF document text
    • http://bapewagidedexe.22web.org/tosajaxadi.pdfIn PDF document text
    • http://xtrading.buzz/replace_toner_error_brother_mfc-l2710dw8t9kx.pdfIn PDF document text
    • https://cdn.sqhk.co/dugelabomaw/hbhaicd/college_football_playoffs_2020_scores.pdfIn PDF document text
    • https://larigagip.weebly.com/uploads/1/3/4/8/134887586/bdc259a1a56cb7f.pdfIn PDF document text
    • https://bevikafu.weebly.com/uploads/1/3/4/7/134710030/dopuvoz.pdfIn PDF document text
    • http://wuxapogetal.iblogger.org/vidyasagar_kobita.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464080/normal_5fdb92ce0b51e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412599/normal_60523ff3c91f6.pdfIn PDF document text
    • http://ginumon.iblogger.org/telugu_chalo_dj_remix_songs.pdfIn PDF document text
    • http://fegalaro.iblogger.org/aha_af_guidelines_2018.pdfIn PDF document text
    • https://cdn.sqhk.co/fodexuxefeba/eIljhjf/jozakupobukubikenufodati.pdfIn PDF document text
    • https://turuposuka.weebly.com/uploads/1/3/5/4/135400354/5811978.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413117/normal_60177eb62c07d.pdfIn PDF document text
    • https://cdn.sqhk.co/gixedomawa/gPdhijd/virtual_classroom_rules_for_elementary_students.pdfIn PDF document text
    • http://mxbur.fun/ivory_paper_sheet_meaning6ix74.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/fenokorobosositetibizu.pdfIn PDF document text
    • https://s3.amazonaws.com/sojuravewi/75210597089.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_off0000f9e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF9E5 5184 bytes
SHA-256: 829936f4824c5971f929b0ed41ec41a923fa17eeb5394f1ce5db7c03b5225855
font_01_sfnt_off00010ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10BA5 11468 bytes
SHA-256: d13b15330e8df48cb2c65c4d64abb9c48d2977f70cb097d64e41f4c7066e65f6

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