Malicious PDF — malware analysis report

Static analysis result for SHA-256 2050454ab88a8674…

MALICIOUS

PDF

59.5 KB Created: 2021-06-24 20:21:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: bf943d332ad014b4dd2ec90c1670f93d SHA-1: f81d878c9593938fdbb5cfde742cb3ba88829ac7 SHA-256: 2050454ab88a8674eff360e8dcef47d4d1d9271b78e869e3443326e3222a7b19
94 Risk Score

Malware Insights

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

This PDF document contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains. The document's body text, though heavily obfuscated, appears to be a lure for 'Imo apps download for mobile 2019'. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8124

Heuristics 4

  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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
  • 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://wastran.ru/uplcv?utm_term=imo+apps+download+for+mobile+2019 PDF link annotation
    • http://wskinbody.com/data/boardData/files/66070840161.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/ea8efc57fa27e659af8437fad846fe1d/buxefe.pdfIn PDF document text
    • https://www.okcfarmersmarket.com/wp-content/plugins/super-forms/uploads/php/files/b13913c6114b9f53e713495c96a2fbac/10495774492.pdfIn PDF document text
    • http://capmar.eu/userfiles/file/63458502919.pdfIn PDF document text
    • http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6d363eb074---misefiloxubiputafufovexi.pdfIn PDF document text
    • http://abwjefferson.com/uploads/files/zorul.pdfIn PDF document text
    • https://thehamptonsbloomington.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d95e9b1da2---64748015233.pdfIn PDF document text
    • http://samuiluxurytravel.com/Uploads/file/komevemoluneg.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607170710ce49---50267547938.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e9e0acdcd---67834966743.pdfIn PDF document text
    • https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160785c3cd8f29---76654006876.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/21880511308.pdfIn PDF document text
    • http://www.gainerwindows.ca/wp-content/plugins/super-forms/uploads/php/files/e2jqi15at1h6chofdjukh0kv76/94771937197.pdfIn PDF document text
    • http://strandedtattoo.net/file/77196473783.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/37566707730.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0F2 5544 bytes
SHA-256: 98b03c8177bf34cb8c6371b865cd743325071491a07934f4eade837f58d5a827

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