Malicious PDF — malware analysis report

Static analysis result for SHA-256 12642e254c27d3a9…

MALICIOUS

PDF

72.6 KB Created: 2021-02-26 17:30:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 19aedd713d84ef9b4cb7a8d6fe200c50 SHA-1: 5a8be4ac95553f395b47c530f905def8d2aa9a10 SHA-256: 12642e254c27d3a94682c221952376dabb9941a4ae3f9b71a4b25adc42e3e4a9
244 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
  • 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 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.
  • 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/award?keyword=international+marketing+manager+salary+in+malaysia In PDF document text
    • http://xubanapirobula.mypressonline.com/notukazefesixiwap.pdfIn PDF document text
    • https://xubebedi.weebly.com/uploads/1/3/0/7/130776367/mokajamosiwixug.pdfIn PDF document text
    • https://dibusolig.weebly.com/uploads/1/3/4/0/134096246/cb9ceb64.pdfIn PDF document text
    • https://kidamevu.weebly.com/uploads/1/3/1/4/131437276/7038985.pdfIn PDF document text
    • https://cdn.sqhk.co/tolononof/b1jcgLH/affordable_wedding_cakes_in_brooklyn.pdfIn PDF document text
    • https://niresofet.weebly.com/uploads/1/3/2/6/132682193/mopibamulexej-bujadafejedat-mobowij.pdfIn PDF document text
    • https://topifovav.weebly.com/uploads/1/3/4/5/134595147/7726000.pdfIn PDF document text
    • http://mojadejazisapa.sportsontheweb.net/walt_disney_world_schedule_2021.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://dafiwogi.rf.gd/vopewunu.pdfIn PDF document text
    • http://wudobez.rf.gd/bass_guitar_strings_guide.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/23949209958.pdfIn PDF document text
    • http://lidazadopedu.rf.gd/are_900_watt_microwaves_good.pdfIn PDF document text
    • http://mudotepejix.epizy.com/28981818040.pdfIn PDF document text
    • http://xuvekixofeku.onlinewebshop.net/37847240095.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD314 4896 bytes
SHA-256: e7f6031d77c2f7a783288e7ca0bcb7821d439a1cb9f899095f80c689549cacea
font_01_sfnt_off0000e39e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE39E 10396 bytes
SHA-256: cf127be7383806c302a7a0c265cdd17c7ac39388650eac2d16c8be35e8e20d62
font_02_sfnt_off00010740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10740 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333