Malicious PDF — malware analysis report

Static analysis result for SHA-256 559cc37ff0fba9e4…

MALICIOUS

PDF

74.3 KB Created: 2021-04-07 23:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-13
MD5: 2be6558c0b6418e9631c00db980b9096 SHA-1: 4b682cf64881a37ab9c2d2eb6c957427193b7892 SHA-256: 559cc37ff0fba9e4c64158759a42ba7c2dbadb32bf4388e34eaf0979570cada7
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged by multiple heuristics as malicious, including a machine learning classifier and ClamAV, identifying it as a phishing trojan. The document contains numerous embedded URLs, many pointing to disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The primary lure appears to be a fake manual for a Panasonic TV.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=panasonic+viera+led+tv+manual PDF link annotation
    • https://gixakipero.weebly.com/uploads/1/3/1/4/131412713/zuboda-kiwedonowem.pdfIn PDF document text
    • http://shoop-fn.ru/red_slug_bug_for_sale4rk24.pdfIn PDF document text
    • http://classicalnaturally.com/fubojetp1rrl.pdfIn PDF document text
    • https://mojulikobamod.weebly.com/uploads/1/3/4/4/134488450/libatosof-wapomademedipe-deluxeraxeje-telizigan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458148/normal_605d66a05ff39.pdfIn PDF document text
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdfIn PDF document text
    • https://lurotafimeka.weebly.com/uploads/1/3/0/7/130740015/676134f.pdfIn PDF document text
    • http://twenty-promo2020.ru/najodarolowelora4le16.pdfIn PDF document text
    • http://wefinexof.iblogger.org/n_a_t_p_ka_full_form.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488314/normal_602a818074184.pdfIn PDF document text
    • http://buloshnaya.site/jepejivujiguwaximewujuw3cw54.pdfIn PDF document text
    • https://tovuwofox.weebly.com/uploads/1/3/4/7/134731163/f85e64.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472481/normal_5feb4f84211f6.pdfIn PDF document text
    • http://minuduw.22web.org/51165144603.pdfIn PDF document text
    • http://my-favshopc.online/xubugefetizonoq169y.pdfIn PDF document text
    • http://hiziryigit.online/2215791122yhj63.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba34ab19-161f-4a95-9220-10ea9a1e103c/maximum_ride_manga_book_2.pdfIn PDF document text
    • http://nosofaxiwobud.epizy.com/90219993127.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf7fb398-4535-405d-a17d-014a1a449f60/fuloroma.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd88ae5c-2c74-46b2-b720-3af543b48a3e/91702426101.pdfIn PDF document text
    • http://sewuxikamumo.rf.gd/oh_holy_night_adolphe_adam.pdfIn PDF document text
    • http://bitetam.epizy.com/gezex.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_off0000e6b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6B2 5148 bytes
SHA-256: caff8cc9586ad86e8f730f98dbb8bdf1aeb5322063982e3a7a4afe77171aba57
font_01_sfnt_off0000f820.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF820 10596 bytes
SHA-256: 9d00eb07f47d776d28fbf5ec181d818125e582712e16e0b1897b347011bfc9e7

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