Malicious PDF — malware analysis report

Static analysis result for SHA-256 271e68c23cd2fbe8…

MALICIOUS

PDF

73.2 KB Created: 2021-05-15 09:40:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: e7f263246431dfdb08ce95db37d8aff3 SHA-1: e6f1452b0b2602ce5dbe87df2fdb3e8a874e3d45 SHA-256: 271e68c23cd2fbe89a317854b6f2d841562ac3d5e9c4c95fa89b826ad793f921
126 Risk Score

Malware Insights

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

This PDF file was flagged by ML classifiers and ClamAV as malicious. It contains numerous embedded URLs, many hosted on disposable domains, suggesting a phishing or malware distribution campaign. The document body, though heavily obfuscated, appears to be a lure related to printer setup, which is a common tactic for social engineering.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/strik?utm_term=what+is+the+wps+button+on+the+access+point+for+canon+printer PDF link annotation
    • http://dawexefif.getenjoyment.net/power_book_2_ghost_cast_cane.pdfIn PDF document text
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/3404ca4e09a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494891/normal_601386bc8fad7.pdfIn PDF document text
    • http://kazimibi.getenjoyment.net/fourth_definition_of_myocardial_infarction.pdfIn PDF document text
    • http://kitafoged.medianewsonline.com/where_does_it_say_in_the_bible_that_god_gives_us_free_will.pdfIn PDF document text
    • https://bawokuxuduxiv.weebly.com/uploads/1/3/1/8/131856062/nefetutof-forarumemago-nawezotalusoju-palilik.pdfIn PDF document text
    • https://fekoguto.weebly.com/uploads/1/3/4/4/134491689/acdf3142e342f4.pdfIn PDF document text
    • http://xogunajeraxuda.mywebcommunity.org/33798108637.pdfIn PDF document text
    • https://sadewirezetif.weebly.com/uploads/1/3/4/3/134318623/ganadopo.pdfIn PDF document text
    • https://zokesafan.weebly.com/uploads/1/3/0/7/130775675/lufupufu-sefeviso.pdfIn PDF document text
    • https://tobivuzulukimu.weebly.com/uploads/1/3/1/3/131384599/nimijimedub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470226/normal_6067a0ea5d18d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465565/normal_5fd23ffd086a0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495973/normal_5fd67412bd3ff.pdfIn PDF document text
    • http://bafakuvim.sportsontheweb.net/pufaviribademuramep.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kipazafar.atwebpages.com/best_law_of_attraction_books_2020.pdfIn PDF document text
    • http://mupopab.rf.gd/3492540924.pdfIn PDF document text
    • http://tukuzadixejune.epizy.com/digital_signals_and_logic_gates.pdfIn PDF document text
    • http://jeduvuvojupan.rf.gd/gipiwo.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_off0000e007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE007 5316 bytes
SHA-256: ca91782ee72cbd3ff4936028dcbcbfd134671df12796d15d0042d7a95bc796a6
font_01_sfnt_off0000f22d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22D 10556 bytes
SHA-256: cd5e4e7bcae2a62318618842a22b99197988a9fe17eeba1d6da51dd30c44c46e

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