Malicious PDF — malware analysis report

Static analysis result for SHA-256 ace3e9d225622f22…

MALICIOUS

PDF

70.1 KB Created: 2021-02-10 11:42:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: e93825f10cda1a43005498e985fa6d26 SHA-1: 80bb74801dd0b4621a3aeca316cc000294f2c1cc SHA-256: ace3e9d225622f224821d4b01bf78f184bdff7242e7782f28648acb91e71e21a
206 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://baarspo.ru/wb?keyword=hoopeston%20il%20police%20reports PDF link annotation
    • https://sojujigun.weebly.com/uploads/1/3/0/9/130969910/e66c3484f272a.pdfIn PDF document text
    • http://topuniversityru.fun/first_world_war_western_front_battlepqelk.pdfIn PDF document text
    • https://bilemupu.weebly.com/uploads/1/3/4/6/134654663/1194723.pdfIn PDF document text
    • http://hisgohar.site/twilight_3_gratuitfnxkq.pdfIn PDF document text
    • https://foxenezave.weebly.com/uploads/1/3/5/3/135316699/14b38e53052.pdfIn PDF document text
    • https://jadikabejoza.weebly.com/uploads/1/3/2/7/132740193/7015817.pdfIn PDF document text
    • https://cdn.sqhk.co/wezupobuwab/gr8hbSv/68913185530.pdfIn PDF document text
    • http://rotelebi.22web.org/acrobat_writer_free_windows_10.pdfIn PDF document text
    • https://xexigajusotojuz.weebly.com/uploads/1/3/1/6/131606060/766282.pdfIn PDF document text
    • https://gefozusep.weebly.com/uploads/1/3/5/3/135346228/relawerojenet-fetupodululal.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/kujesulad/chaupai_sahib_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/ace_academy_notes_for_gate_mechanical.pdfIn PDF document text
    • http://pasazaxara.rf.gd/aoc_envision_series_32_manual.pdfIn PDF document text
    • http://pefogitoveni.epizy.com/automatic_transfer_switch_diagram.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/2245813340.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_off0000d790.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD790 4676 bytes
SHA-256: 0d0f8118e7aef2ed7f68d045bccfc8bbd3239a79297bd8c8ef4f7a87875d41b0
font_01_sfnt_off0000e783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE783 10540 bytes
SHA-256: a8f9087c089005296798a5cd30b2af49951ab11c261708181a2fbee3de33c928