Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd04f61f1daabcb…

MALICIOUS

PDF

145.9 KB Created: 2021-03-15 21:35:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: db59850ab7e9ac1eb7ca1b9a375ad6bd SHA-1: d7a5282b2943f591c26883ac4aeb1b8b37e1847b SHA-256: 6bd04f61f1daabcb0b78b82cf4b457da9fb3275b90b157ca7eaf1e4e279446f8
134 Risk Score

Malware Insights

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

The file was detected as malicious by multiple heuristics, including a high-confidence ML classifier and ClamAV. It contains numerous embedded URLs, many pointing to disposable domains, suggesting a link farm or phishing lure. The document body, though heavily obfuscated, contains text related to 'language variations' and 'pdf', which aligns with the URL's 'heograpikal na varayti ng wika pdf' parameter, indicating a likely phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9986

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 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://jottigo.ru/123?utm_term=heograpikal+na+varayti+ng+wika+pdf PDF link annotation
    • http://xedeporib.medianewsonline.com/buddhist_symbols_and_meanings.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402953/normal_604fadd269f8a.pdfIn PDF document text
    • https://cdn.sqhk.co/zevijevam/ijf2idA/fixusoxubapabudad.pdfIn PDF document text
    • https://sewusadata.weebly.com/uploads/1/3/5/4/135401056/bibilasipejuf-siterusunetel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464878/normal_60286681c3e3f.pdfIn PDF document text
    • https://pubedazemel.weebly.com/uploads/1/3/4/8/134870130/lelubukeboxe.pdfIn PDF document text
    • http://parazepurafeza.medianewsonline.com/java_programming_language_textbook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384142/normal_5fcb8eb99a765.pdfIn PDF document text
    • https://wudujadulaneg.weebly.com/uploads/1/3/0/7/130738887/fupexom-fulutofi-pifirifaxu-rapotamovu.pdfIn PDF document text
    • https://cdn.sqhk.co/ruzesowasu/jegc2C1/where_can_i_spend_apple_cash_online.pdfIn PDF document text
    • http://xalenupom.getenjoyment.net/nilazuweku.pdfIn PDF document text
    • https://vamawawu.weebly.com/uploads/1/3/0/8/130874524/zeton.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455681/normal_5ff26db603932.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404975/normal_604d2e53677b2.pdfIn PDF document text
    • https://cdn.sqhk.co/kufomopinu/j62hhIs/rakudunapunudowo.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/jcZcFgi/vector_full_mod_apk_apkpure.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://totuxivez.onlinewebshop.net/vigid.pdfIn PDF document text
    • http://wepaxilex.epizy.com/bomutomobokufonada.pdfIn PDF document text
    • https://s3.amazonaws.com/mamibis/gartner_report_blockchain.pdfIn PDF document text
    • http://bufurevufazan.epizy.com/sirodakifunajelepa.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/template_slideshow_adobe_premiere.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/delekokagipeluxadifosepi.pdfIn PDF document text
    • http://dimogotewebi.epizy.com/fejopuwepenibetuvixiwajud.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_off0001fc53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1FC53 5308 bytes
SHA-256: 119be8e9808db8dff1a59c73ee677162c5de87228dbea177ed1124b3aa59f11a
font_01_sfnt_off00020e93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20E93 12708 bytes
SHA-256: fedfba082df8598489ab3ef54fc9dde0847a2e21573c647a6f4b482c1ee19d4e