Malicious PDF — malware analysis report

Static analysis result for SHA-256 c85f007bfd23283c…

MALICIOUS

PDF

70.4 KB Created: 2021-02-01 21:49:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 02296a4fb903709c38006c545f0ceba4 SHA-1: a3a822840fb768193a3dff3fdd346a4986a4fca2 SHA-256: c85f007bfd23283c5a127f26cbc9f6f448e6fa377bcaa03f3ee366a520536c2e
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/aws?utm_term=criminal+case+apk++for+android PDF link annotation
    • https://mofafodoler.weebly.com/uploads/1/3/0/8/130874416/xorotesof.pdfIn PDF document text
    • https://lotekine.weebly.com/uploads/1/3/1/3/131381428/4289003.pdfIn PDF document text
    • https://putusura.weebly.com/uploads/1/3/1/6/131606782/xumipeku-peguw.pdfIn PDF document text
    • https://rasizuxuner.weebly.com/uploads/1/3/1/3/131378923/migojafesagigal.pdfIn PDF document text
    • https://jedegifopa.weebly.com/uploads/1/3/0/7/130738854/wojegujesa-jodamutigoxe-tujofurafudet.pdfIn PDF document text
    • https://jijobowuzum.weebly.com/uploads/1/3/4/5/134590228/d45646107.pdfIn PDF document text
    • https://cdn.sqhk.co/nalawanuxa/iHighjb/soft_rock_radio_stations_denver.pdfIn PDF document text
    • https://cdn.sqhk.co/xunijejozi/Dc1H6hi/red_sun_august_2020.pdfIn PDF document text
    • https://dedelazixuni.weebly.com/uploads/1/3/4/5/134596723/20e7c.pdfIn PDF document text
    • https://xumizobizuzu.weebly.com/uploads/1/3/4/6/134688834/kepakojizat.pdfIn PDF document text
    • http://ratubave.22web.org/cells_and_functions_worksheet.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bonizeza.epizy.com/inventory_management_report_sample.pdfIn PDF document text
    • https://s3.amazonaws.com/satulibaren/man_utd_chelsea_match_report.pdfIn PDF document text
    • http://wavedada.epizy.com/regions_of_asia.pdfIn PDF document text
    • https://s3.amazonaws.com/jezaxojipevu/chalte_chalte_film_song.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_off0000d603.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD603 5268 bytes
SHA-256: d8499609ba634b21d5e7c502d4c75e32b4822c5b41e732ccb10be6c4269af8a3
font_01_sfnt_off0000e7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D1 10880 bytes
SHA-256: 52c9ef53e53fe2b5a01fc7a4135dab976ef7192aaa222c704fcb3fd31b12b565