Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5a75427c4b4e13…

MALICIOUS

PDF

72.6 KB Created: 2021-02-14 18:21:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 2c0e8996e0277441955402d50c7dae27 SHA-1: 047ee2315c082a4e904de133688c2d55e4b6b529 SHA-256: 7a5a75427c4b4e13acdf144c9e1ab878ac33f415d55249df8373f21591644dc5
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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/wb?keyword=hide%20pictures%20calculator%20app%20android PDF link annotation
    • https://juwufugoxeza.weebly.com/uploads/1/3/4/5/134528381/vinujibozilujuko.pdfIn PDF document text
    • https://xorowime.weebly.com/uploads/1/3/5/3/135307705/bozul-jebokatatir-womana.pdfIn PDF document text
    • http://creditstar-kabinet.com/building_plans_3_bedroom_houseu1i52.pdfIn PDF document text
    • https://weralafopibobal.weebly.com/uploads/1/3/4/3/134338927/5672969.pdfIn PDF document text
    • https://tefuvaxijo.weebly.com/uploads/1/3/0/7/130739162/tulejedi_megod_benavapurapa.pdfIn PDF document text
    • http://samelike.site/688509297490k82j.pdfIn PDF document text
    • http://g2am2e.xyz/gaspard_monge_biografiaao1eb.pdfIn PDF document text
    • https://reratuzofi.weebly.com/uploads/1/3/5/3/135346135/jatimedet.pdfIn PDF document text
    • https://lobobofu.weebly.com/uploads/1/3/4/6/134680821/tezizifanupuladur.pdfIn PDF document text
    • http://mmmmmme.space/unilorin_admission_list_download_2018jzxjx.pdfIn PDF document text
    • https://xisasuwida.weebly.com/uploads/1/3/4/4/134472621/f5b7f3.pdfIn PDF document text
    • https://fifekususelamib.weebly.com/uploads/1/3/5/3/135349053/6096974.pdfIn PDF document text
    • http://wijalejumodu.22web.org/pulifemovelinonowog.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://mupeluzapuwefa.rf.gd/physics_answers_class_10.pdfIn PDF document text
    • http://dimarujevetuvif.epizy.com/classifying_numbers_practice.pdfIn PDF document text
    • http://zumewozuzetarun.epizy.com/dekodasifabumelanepufobep.pdfIn PDF document text
    • http://wekujugom.epizy.com/tatoguli.pdfIn PDF document text
    • http://totiwofosu.epizy.com/free_business_card_templates_psd.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_off0000e079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE079 5028 bytes
SHA-256: b3c4d497f084ec8c573366be19aa8846e8b402752313e3ae049fe32cdd67799c
font_01_sfnt_off0000f198.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF198 10448 bytes
SHA-256: a93e052e3dff9700edd69cd95644c0359cd6c7facb8bdf13166984665eb04de5