Malicious PDF — malware analysis report

Static analysis result for SHA-256 574cdd190d66071b…

MALICIOUS

PDF

79.4 KB Created: 2021-04-06 01:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 73b77b4c91746e1392fd6e2dc0abe802 SHA-1: 29949d00c18a6ebf50fa2f90065c8dae8001a166 SHA-256: 574cdd190d66071bcb91db02498e3604ee506d87e8f074b268d7e67f5c3a30a4
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by multiple heuristics, including ClamAV and an ML classifier, indicating it is a phishing or trojan delivery mechanism. It contains a large number of external links, many hosted on disposable domains, suggesting a link farm designed to redirect users to potentially harmful content. The document body, though obfuscated, contains a title related to miter saws, likely a lure to attract clicks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://zajinet.ru/strik?utm_term=how+to+adjust+the+laser+on+a+kobalt+miter+saw PDF link annotation
    • https://cdn.sqhk.co/fixosotefe/Kiejhgi/rebuild_of_evangelion_4._0_online.pdfIn PDF document text
    • https://vubufogos.weebly.com/uploads/1/3/4/7/134766152/puluj_jesopoxiwimet_ximufaxifo_jobimabaji.pdfIn PDF document text
    • https://xikalevu.weebly.com/uploads/1/3/4/3/134319979/7946614.pdfIn PDF document text
    • https://cdn.sqhk.co/vakanaju/4PhbZhg/car_crash_today_nj.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/ibf2geS/ultimate_fall_guys_servers.pdfIn PDF document text
    • https://jabiwubebawa.weebly.com/uploads/1/3/4/3/134365468/6073981.pdfIn PDF document text
    • https://cdn.sqhk.co/kunimoxifagi/hhhgweh/faux_leather_pants_plus_size.pdfIn PDF document text
    • https://lirefabagobaxi.weebly.com/uploads/1/3/4/0/134012393/perifupaxinokogevu.pdfIn PDF document text
    • http://ruluzuzadol.mypressonline.com/13965795394.pdfIn PDF document text
    • http://jidapuxedepu.medianewsonline.com/how_to_hook_up_bose_cinemate_series_ii_to_tv.pdfIn PDF document text
    • https://kurevewadojig.weebly.com/uploads/1/3/1/4/131437207/5676455.pdfIn PDF document text
    • http://xolokukifimiv.sportsontheweb.net/visitazikidiwofo.pdfIn PDF document text
    • https://sazavilekin.weebly.com/uploads/1/3/4/8/134851962/tenepusiw-tifefimikiw-baxedodurajume-fuzun.pdfIn PDF document text
    • https://cdn.sqhk.co/sotisajen/hbbrjf7/79907576683.pdfIn PDF document text
    • http://gixapedotamerow.mywebcommunity.org/whirlpool_wdt720padm1_service_manual.pdfIn PDF document text
    • http://midikakuvekume.mywebcommunity.org/here_comes_the_sun_beatles_chords_piano.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wozimape.onlinewebshop.net/xosagijezasuj.pdfIn PDF document text
    • https://s3.amazonaws.com/sezebepit/wow_alchemy_leveling_guide.pdfIn PDF document text
    • http://soranodabiwegi.myartsonline.com/babijuvoxof.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/non_disclosure_agreement_template.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_off0000f414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF414 5396 bytes
SHA-256: ebb77d94845bd85465dbec0add6c4acc0046d65dc09487922f7a1c51a2a9ae6a
font_01_sfnt_off00010652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10652 11600 bytes
SHA-256: 976b3a102bed5e6162e4434144af92d4f85dc295d7d4b150ee4fb75cd50043e2