Malicious PDF — malware analysis report

Static analysis result for SHA-256 6c047cfbea7b1da5…

MALICIOUS

PDF

69.2 KB Created: 2021-05-30 00:28:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-25
MD5: b3f551e931ab38335f2ea473d0166947 SHA-1: 3f929271838c1d4e1c0d795696e1502682583db8 SHA-256: 6c047cfbea7b1da51a37915a18cadef75427cd583d8b7a480d9ed4fbc98d61b2
186 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including ClamAV and an ML classifier. It contains a large number of external links, many pointing to disposable domains, suggesting a link farm or phishing operation. The primary URL, 'https://gimoguvi.ru/strik?utm_term=dil+ne+jise+apna+kaha+full+movie+watch+online', is presented in a way that mimics a search result for a movie, likely to trick users into clicking. No scripts were extracted, but the PDF structure and link farm indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://gimoguvi.ru/strik?utm_term=dil+ne+jise+apna+kaha+full+movie+watch+online PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4401558/normal_6000412c0913b.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4416136/normal_60b10f217cd38.pdfIn PDF document text
    • https://nobakavukip.weebly.com/uploads/1/3/4/3/134373074/27fce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_5fea2584ab84d.pdfIn PDF document text
    • https://jigugupidutugi.weebly.com/uploads/1/3/0/8/130813301/wemogeg.pdfIn PDF document text
    • https://woliremokeg.weebly.com/uploads/1/3/4/3/134340334/wufagixodijufi-vuzozozewukefe-kadeniwari.pdfIn PDF document text
    • https://wanitovamuk.weebly.com/uploads/1/3/5/3/135303456/biwofoxalarasenumedo.pdfIn PDF document text
    • https://bowemubunewoseg.weebly.com/uploads/1/3/0/7/130739536/88f86e1.pdfIn PDF document text
    • https://fewabobur.weebly.com/uploads/1/3/4/7/134713859/4684168.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454825/normal_602de369e6f2c.pdfIn PDF document text
    • https://rugomekedakore.weebly.com/uploads/1/3/5/3/135302214/3087225.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419820/normal_5fd0592f3ad47.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4458125/normal_5fe056a3719c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476954/normal_5ff2c1c0d8463.pdfIn PDF document text
    • https://gufagopa.weebly.com/uploads/1/3/4/6/134660265/1175470.pdfIn PDF document text
    • https://bejaluxixobig.weebly.com/uploads/1/3/7/5/137506446/3477886.pdfIn PDF document text
    • https://xavagozewurele.weebly.com/uploads/1/3/4/5/134583143/pagutelozumak-babirame-wupemuki-fosexetukusu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_5fd828e35ef82.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_606e361469473.pdfIn PDF document text
    • https://nunugaborunis.weebly.com/uploads/1/3/1/4/131437119/fimuzadule_nulomu_nixaw_tepufaveg.pdfIn PDF document text
    • https://pudabesipewoz.weebly.com/uploads/1/3/0/9/130969441/vaxowetadegejipid.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382613/normal_60008b950fc2d.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4382421/normal_60aff7839e483.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000cfb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB6 5452 bytes
SHA-256: f6023d24979a5c5f21a2a68ec711088e730bfe10d4a4eaed63cc88350d8c40b4
font_01_sfnt_off0000e240.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE240 10332 bytes
SHA-256: fb822a27df6565db99380661a6a464792aabe0d9dc1beb5840ea0d4a4eb64c0f