Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce4ebc2e67975f2…

MALICIOUS

PDF

69.4 KB Created: 2021-02-17 13:39:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 8123535b0ffa14429409a9ba728f6b2c SHA-1: 0160581125e729285be4ef9c6d543cccc7c17f81 SHA-256: 2ce4ebc2e67975f23f00644fe78a6210ff84437ebc5a51ab99aeec95799ea91f
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://yafferge.ru/wix?keyword=lram+rram+mram+worksheet In PDF document text
    • https://static.s123-cdn-static.com/uploads/4413843/normal_5fcf4a8b97699.pdfIn PDF document text
    • http://bizelapeto.iblogger.org/pupozug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476152/normal_6016dea39e960.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374520/normal_6007b2bee1b2a.pdfIn PDF document text
    • https://komiwafaka.weebly.com/uploads/1/3/2/7/132712661/farojogekotomis.pdfIn PDF document text
    • https://dorikorojuj.weebly.com/uploads/1/3/3/9/133987202/6349570.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462697/normal_602a54d68682e.pdfIn PDF document text
    • http://pifozuvarivin.22web.org/adobe_suite_cs6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lojupefiduk.epizy.com/5816493181.pdfIn PDF document text
    • http://bologipegokofi.epizy.com/mipuzovowukuvorikuwut.pdfIn PDF document text
    • https://s3.amazonaws.com/memobofilenabon/am_not_a_good_person_quotes.pdfIn PDF document text
    • http://tumizasikoxef.rf.gd/worksheet_1.7_subject_pronouns_answers_spanish.pdfIn PDF document text
    • https://s3.amazonaws.com/fevobelijogal/23539559048.pdfIn PDF document text
    • http://nifimemewiz.epizy.com/disejawezukolotitoneke.pdfIn PDF document text
    • http://gixosuwali.rf.gd/76209788476.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC04D 4988 bytes
SHA-256: 123109791c715043f564ebdc5783fa197ddc285437251217ecca3304f681e7cb
font_01_sfnt_off0000d12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD12E 10068 bytes
SHA-256: 379aa597f5e2f57d831f35d5f797cd2088d2c0e1672c4fbf927e2967d006501e
font_02_sfnt_off0000f3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F6 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2