Malicious PDF — malware analysis report

Static analysis result for SHA-256 59f62719148bb637…

MALICIOUS

PDF

66.3 KB Created: 2021-02-08 04:42:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 39994ef30d4b21fa2e1b256bc6472acf SHA-1: ccddda31720db80d0608d037610b9959f6c55e1e SHA-256: 59f62719148bb637e4e7e98119812a912a0e79db269f9fc491580a0a19595f68
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://maypoin.ru/aws?utm_term=ielts+writing+test+answer+sheet+task+2 PDF link annotation
    • https://fuzewejobedogu.weebly.com/uploads/1/3/1/4/131482867/metolukuxosuxi.pdfIn PDF document text
    • http://newowoliso.iblogger.org/58586112161.pdfIn PDF document text
    • https://vakupakofusiwu.weebly.com/uploads/1/3/5/3/135399484/forixebomusiwarufije.pdfIn PDF document text
    • http://kvyovk.xyz/7457750306kssbf.pdfIn PDF document text
    • https://worizura.weebly.com/uploads/1/3/1/4/131437573/wizomizoruwoze.pdfIn PDF document text
    • https://wafifeberir.weebly.com/uploads/1/3/2/6/132682897/jogam.pdfIn PDF document text
    • http://b4shop.icu/xexitegixevomemtlaw.pdfIn PDF document text
    • http://podcard2020.site/92589604134sjstz.pdfIn PDF document text
    • http://muwazowezijowa.22web.org/craghoppers_hat_size_guide.pdfIn PDF document text
    • http://simkosa.website/electrical_wiring_download4rcdd.pdfIn PDF document text
    • https://daguvosiliwu.weebly.com/uploads/1/3/1/4/131406153/vekesan.pdfIn PDF document text
    • http://jepatugikanoxuv.iblogger.org/cell_membrane_diagram_worksheet_answers.pdfIn PDF document text
    • http://migerov.xyz/tajwid_al-quran_rasm_uthmanifi7pt.pdfIn PDF document text
    • http://ashotik.space/fufezudijetegonatufaj2fv7i.pdfIn PDF document text
    • http://takodevizol.iblogger.org/67638454326.pdfIn PDF document text
    • http://biolinkus.me/apple_cake_without_eggs_uk_recipe8gnpw.pdfIn PDF document text
    • https://rixafivi.weebly.com/uploads/1/3/1/3/131380000/tofunuzojafapofari.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xefivaz.epizy.com/23518649511.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_off0000c917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC917 5172 bytes
SHA-256: a54f1a5ca967f3debb8f91d1fbb6ff71ec1297b4cbd749d60f9f469f1161b1a6
font_01_sfnt_off0000dab7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAB7 9792 bytes
SHA-256: 00416e03413c734e25a3e1c5b3458bf4e8ea4eef2852d176c21b008e8924e9f1