Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea1736f2af9042fa…

MALICIOUS

PDF

68.4 KB Created: 2021-01-06 03:43:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-07-02
MD5: 1bf706cf2a9c66c4daba04310922c7ad SHA-1: d0d62782eec84e3a308269a8bc1661cb45e92dca SHA-256: ea1736f2af9042faba6e6ea78acca0bc73677069f55338aca50fd28a8034cdd1
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://trafffe.ru/wb?keyword=stachys%20hummelo%20betony PDF link annotation
    • https://lezanixopedem.weebly.com/uploads/1/3/4/8/134886347/fozedamojox-pajofam-durek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422906/normal_5f9bd14dd0da3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447915/normal_5fdee573e47ff.pdfIn PDF document text
    • https://marajudalade.weebly.com/uploads/1/3/1/4/131438096/0a9ea.pdfIn PDF document text
    • https://rofobanajogano.weebly.com/uploads/1/3/1/1/131164113/bavel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490366/normal_5fb952e07adc4.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/ghGjhjb/wosuzeluritukesoguxile.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423442/normal_5fb35ee1c9fad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477877/normal_5faebf9c10a14.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464851/normal_5fdc38b161760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416802/normal_5fa3db283de65.pdfIn PDF document text
    • https://cdn.sqhk.co/rubovadu/hcghI36/head_soccer_ios_cydia_hack.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427509/normal_5f97eb324619a.pdfIn PDF document text
    • https://wusunipusu.weebly.com/uploads/1/3/4/3/134320006/lugawuke.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417662/normal_5fbeed7921686.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460449/normal_5fa87b710c259.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/4a71b6c6-6162-4100-a203-d24247a1782c/vinyl_cutter_and_heat_press_uk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eaf0b431-7bfa-4b7c-b61a-20b5699c49ed/fivibetojadogilisakodenul.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_off0000cfaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFAF 5288 bytes
SHA-256: 22da7ef2c7d54bbbb77b960c8c5d3b0fd4e776ddc1cf159e7ecc69791673bd17
font_01_sfnt_off0000e18f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18F 10304 bytes
SHA-256: 92178f2b460ab6c66d14aa97889e33f59071fa3c61290245a62a4f5a3b0ebc05

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