Malicious PDF — malware analysis report

Static analysis result for SHA-256 07e48868399cce5a…

MALICIOUS

PDF

96.1 KB Created: 2021-06-04 06:25:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 1950e19673551a43673779fb37028687 SHA-1: 185a0f3adebaa0d78778aafad71fcf7885ca777c SHA-256: 07e48868399cce5a2f3ee17c09aa65948efbc7d138fb8be934bc619f7b38c253
186 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://ponafet.ru/123?utm_term=cercle+de+ma+forme+ornano PDF link annotation
    • https://sazezikamujut.weebly.com/uploads/1/3/1/4/131438312/5440102.pdfIn PDF document text
    • https://sejirefado.weebly.com/uploads/1/3/4/6/134682993/e8c3f8829fbb.pdfIn PDF document text
    • https://wuwonerosetopux.weebly.com/uploads/1/3/1/6/131606808/baxetenil-tuluba-gosamokav.pdfIn PDF document text
    • https://kunatelifarak.weebly.com/uploads/1/3/2/7/132712072/diwajurujebinedaxe.pdfIn PDF document text
    • https://lopekemin.weebly.com/uploads/1/3/4/6/134628767/wifuduranemorof.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445541/normal_6046719fbfb9b.pdfIn PDF document text
    • https://pepizowa.weebly.com/uploads/1/3/2/7/132711999/4e2cf935f20c.pdfIn PDF document text
    • https://tolakuvekefub.weebly.com/uploads/1/3/5/2/135296469/fusejigijokiku.pdfIn PDF document text
    • https://sagoxanoku.weebly.com/uploads/1/3/4/3/134350044/firawut-rawivab-jibolelu.pdfIn PDF document text
    • https://ratamugokamilel.weebly.com/uploads/1/3/5/9/135959592/nulepomi.pdfIn PDF document text
    • https://mixiwosut.weebly.com/uploads/1/3/4/5/134599068/sagutu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482002/normal_6004a516492b5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384819/normal_600a8020a9898.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388827/normal_5ff92f3cefcae.pdfIn PDF document text
    • https://radunepik.weebly.com/uploads/1/3/4/6/134617153/3d38b3b8c24154.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4406455/normal_5feef236d570b.pdfIn PDF document text
    • https://pugiputofal.weebly.com/uploads/1/3/4/7/134740318/ca99d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2c4d84c-8655-40ae-8d57-edaf9350c88e/zoxumagupetanogeki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f58395e-2570-4db6-b611-da549b219292/how_old_is_the_quran_today.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72ed761f-c36c-4882-9ef8-14f86a42a8dd/68627166932.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49dba7e2-2e83-45e9-bfd1-221c5b251c44/age_of_empires_3_no_dvd_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/253a9afa-d517-4e1c-9e1d-d371d8ca168c/96414773235.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42178acd-077d-4e84-ac6b-e05e527224f9/20833095075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fb879ef-f27e-47ae-a67a-50e24acf3221/bizatusolomojanedebi.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_off00013517.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13517 4896 bytes
SHA-256: c6a4fd04b38eeaafc916dc2111548d02bfe0233a6d055fd9928be4563357bf7f
font_01_sfnt_off000145a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x145A3 14012 bytes
SHA-256: ee1381f8f523396d064f9eb62306381e8d304ee1a6de875622675b2d400baa75