Malicious PDF — malware analysis report

Static analysis result for SHA-256 2242686fcec7b3df…

MALICIOUS

PDF

68.7 KB Created: 2021-03-07 09:55:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 6b45d06aca1f398fb2082a60c9484658 SHA-1: da51799fc73b210a61b33a0f70870377de18d7e5 SHA-256: 2242686fcec7b3dfd1e3f7821c2c516c943a7d2707a473bf73d4e77b7efe6233
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://dafemum.ru/strik?utm_term=how+to+turn+off+beeper+on+frigidaire+microwave In PDF document text
    • https://cdn-cms.f-static.net/uploads/4446394/normal_600e504e721e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413345/normal_5ffba2c5b9226.pdfIn PDF document text
    • https://paxesejok.weebly.com/uploads/1/3/4/3/134348383/fafuvinadin.pdfIn PDF document text
    • https://guwopatuzigumi.weebly.com/uploads/1/3/4/3/134334434/28d69.pdfIn PDF document text
    • http://fevevafo.medianewsonline.com/88303956060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451376/normal_5fd8cd67a97c0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454056/normal_603b73da180bc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417834/normal_5fe3f31a1f926.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368228/normal_5ff0328bf385e.pdfIn PDF document text
    • https://pobufulali.weebly.com/uploads/1/3/4/4/134494274/sujobedakibanoko.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487416/normal_6003638da29f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449629/normal_603e3d5ed195d.pdfIn PDF document text
    • http://ruwosiju.getenjoyment.net/foundations_of_algorithms_5th_edition.pdfIn PDF document text
    • http://jotusimemirido.sportsontheweb.net/31826416418.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/13593113919.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/nust_admission_form_fee.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/fisovonetoron.pdfIn PDF document text
    • https://s3.amazonaws.com/jevedijadiki/samsung_hw-j355_price.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_off0000d0bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BB 5516 bytes
SHA-256: 1b0aa486853819d36049ead1ace9d31a6a9947df44867de185e4db575ee1708b
font_01_sfnt_off0000e380.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE380 9892 bytes
SHA-256: f57cbfe827ea133c4997ea15c3126630202d89f7326e26e0d1bc2c595381023a