Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f7b5c2344abf0e6…

MALICIOUS

PDF

78.6 KB Created: 2021-03-17 15:22:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 4fec89248adf33fcea60f1279ff0a597 SHA-1: 6e955e9e3849bb92549628333d28ef7654009061 SHA-256: 8f7b5c2344abf0e6840a3577bb63f74128cac6df22947121e41d13c5ede27e52
186 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable hosting, suggesting a link farm or phishing attempt. The primary URL, https://pelibifir.ru/strik?utm_term=jbl+speaker+flip+5+price+in+qatar, is likely part of this lure. No scripts were extracted, but the PDF structure itself facilitates the redirection to malicious sites.

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://pelibifir.ru/strik?utm_term=jbl+speaker+flip+5+price+in+qatar PDF link annotation
    • http://sijemogezabusa.sportsontheweb.net/bow_tie_pattern.pdfIn PDF document text
    • http://gujufifirisin.22web.org/nfl_injury_report_usa_today.pdfIn PDF document text
    • http://fitness-ital.fun/microscopio_optico_librosua0l3.pdfIn PDF document text
    • http://vizionsmc.net/xirepenuvumoe0fi7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://07d68bf2-0661-47e2-9ffe-eae068a071af.filesusr.com/ugd/fef806_8b4e95e27209491c9252101dfbcc14ee.pdf?index=trueIn PDF document text
    • http://gorijazesi.epizy.com/krups_il_primo_espresso_user_guide.pdfIn PDF document text
    • https://4a5660cc-52a2-48ff-9acb-4b4f1704cb6e.filesusr.com/ugd/81868d_c8bb8fd8c6234d798ea3b972f80e66bd.pdf?index=trueIn PDF document text
    • http://duliwijedij.rf.gd/ledagugude.pdfIn PDF document text
    • https://1801fa0f-56e4-4894-8452-b8e06651d4be.filesusr.com/ugd/868401_c8d7ec926eef49079a5553f667772ebd.pdf?index=trueIn PDF document text
    • http://sunotewisutexo.epizy.com/7637113905.pdfIn PDF document text
    • https://f7f2eb1f-4ce6-40bf-b337-6bcc2c9c1a95.filesusr.com/ugd/dc6899_c5af449f8c9149d79d3c7220be520aa5.pdf?index=trueIn PDF document text
    • https://7f3dc8b3-869c-44c5-82eb-14ae88d57796.filesusr.com/ugd/dc4ca1_13b06456b66d4da790e56257d418a2de.pdf?index=trueIn PDF document text
    • https://bad3f395-1638-4667-b349-d6f934eeab49.filesusr.com/ugd/ed2d23_53cf2a95831c4a62975e2e34f3688cbc.pdf?index=trueIn PDF document text
    • http://vetizonudaxow.epizy.com/divisoria_street_guide.pdfIn PDF document text
    • http://xenilesaripesu.epizy.com/pearson_precalculus_textbook_7th_edition.pdfIn PDF document text
    • http://zijiwaras.onlinewebshop.net/22694323106.pdfIn PDF document text
    • http://sifebitufol.onlinewebshop.net/deductive_approach_in_research_methodology.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e757.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE757 2856 bytes
SHA-256: e9f082bf757ab9622f11cc7161fe47238fc6298957bddb4dab6bb63e2b3933e0
font_01_sfnt_off0000f17a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF17A 5452 bytes
SHA-256: 5983d237422b89861d6c9bd8f0b98d06c4b479bd5839a943b6ada778e5437d1e
font_02_sfnt_off00010418.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10418 11528 bytes
SHA-256: 1958ab6951be054ae10e23f9f07d0add8c7e60065b76f9580397ec8b25f5c8e0

Open this report in the interactive analyzer, or submit your own file for analysis.