Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3fff4f92524e16e…

MALICIOUS

PDF

73.6 KB Created: 2021-02-11 16:22:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 03556077c69806c76070a3ca6607df81 SHA-1: a81c12d1c2551c198e9a9ef84f9aff823d1b214a SHA-256: c3fff4f92524e16edd4b6fe681c6f3403752de9678ac6945d44a879445d9fe74
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://jottigo.ru/123?utm_term=bushnell+banner+scope+review PDF link annotation
    • https://netajetuz.weebly.com/uploads/1/3/4/6/134651380/pifum-xarakopimedas-tejesabamusuba.pdfIn PDF document text
    • https://rijojuno.weebly.com/uploads/1/3/5/3/135310883/7723640.pdfIn PDF document text
    • https://xofoxinef.weebly.com/uploads/1/3/0/8/130874051/ca331dea3bbc6.pdfIn PDF document text
    • https://fumewalifo.weebly.com/uploads/1/3/4/8/134884483/dumometi_fovulilepuf_jaxifaza.pdfIn PDF document text
    • https://dujizajep.weebly.com/uploads/1/3/4/7/134704211/liluloninotaf_dutamakotoges.pdfIn PDF document text
    • https://mituzeru.weebly.com/uploads/1/3/2/6/132681412/puvejasujopigobidena.pdfIn PDF document text
    • https://gikanusubidi.weebly.com/uploads/1/3/4/7/134756500/kefenegugil_bisitalebojaf_mimeg_wobutopagis.pdfIn PDF document text
    • https://xotonibesil.weebly.com/uploads/1/3/1/4/131407892/vananatolumebelepa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://negifunowulag.rf.gd/83201830548.pdfIn PDF document text
    • http://mujujum.epizy.com/backyard_sports_sandlot_sluggers_free_pc.pdfIn PDF document text
    • http://lebekuwawelu.epizy.com/kuzewagipebusuvufegaf.pdfIn PDF document text
    • http://firabano.epizy.com/angry_birds_online.pdfIn PDF document text
    • http://roxadib.epizy.com/17413269722.pdfIn PDF document text
    • http://gezewezelatemak.epizy.com/muguperewa.pdfIn PDF document text
    • http://felubumasosazi.epizy.com/automotive_spice_guidelines_1st_edition_2017.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_off0000e359.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE359 5364 bytes
SHA-256: 990dd214c124d35a10a99fb262244b062981dcd22eb0cb784e383bfcf58c8868
font_01_sfnt_off0000f5a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5A0 10516 bytes
SHA-256: 1fa9a1ca7dfc091675faf2982f9bcd1cdb30f1d4ab02414e5e6528420348ed15