Malicious PDF — malware analysis report

Static analysis result for SHA-256 11981877a1c1cf34…

MALICIOUS

PDF

68.3 KB Created: 2021-02-27 22:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: a393822585bdb3f3c21fbc4bdd1298e2 SHA-1: c05c9e7e6e015dd691bdadd167b0cafe7c743267 SHA-256: 11981877a1c1cf34940a82a0ee85eab4eb25a3377cdff8996d003ccb8f4462b3
186 Risk Score

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://gimoguvi.ru/award?keyword=wahl+clipper+oil+ingredients PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408471/normal_60055db2dbc88.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4501789/normal_5ff08099e3219.pdfIn PDF document text
    • https://soxawanijisal.weebly.com/uploads/1/3/4/5/134513704/546cc3.pdfIn PDF document text
    • https://zofekumu.weebly.com/uploads/1/3/4/7/134741387/6310071.pdfIn PDF document text
    • https://lapolepep.weebly.com/uploads/1/3/1/4/131406498/38e198b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371497/normal_5fea167c28426.pdfIn PDF document text
    • http://bomesirosik.22web.org/mirono.pdfIn PDF document text
    • https://tilemutafadat.weebly.com/uploads/1/3/1/8/131856023/dumasaw.pdfIn PDF document text
    • https://vejuvofarazaxar.weebly.com/uploads/1/3/4/3/134355137/178266.pdfIn PDF document text
    • https://cdn.sqhk.co/xagaxubibiz/vSjbhcO/change_management_books_2019.pdfIn PDF document text
    • http://bamebefexa.22web.org/91791089670.pdfIn PDF document text
    • http://ramuwazezu.22web.org/excel_spreadsheet_for_tracking_monthly_bills.pdfIn PDF document text
    • https://jawuvufos.weebly.com/uploads/1/3/4/8/134856807/lozuv_gokazezujewol_xolabubunu_pubiwulopal.pdfIn PDF document text
    • http://lezapogogaz.iblogger.org/67997687287.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gumuwojurigab.epizy.com/bukazowomojilorinidib.pdfIn PDF document text
    • http://gapexer.rf.gd/25127662554.pdfIn PDF document text
    • http://jexonuwunow.epizy.com/logical_reasoning_meaning.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_off0000ce61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE61 5348 bytes
SHA-256: d69fd1982f9906c4a346cc3d933dcd291ffa49c12f1e976773ac8f91f05ff286
font_01_sfnt_off0000e093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE093 10380 bytes
SHA-256: a99cad3f3cf0b14526d26fe4283bcd497d843625657adf2f3925447a9aed8281

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