Malicious PDF — malware analysis report

Static analysis result for SHA-256 8551ae0263a70d1c…

MALICIOUS

PDF

71.5 KB Created: 2021-02-21 06:23:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c3c39cfe69295ae6b26e826fa5a73f8b SHA-1: f66568d6c4646196b7788467aaf5501597655d62 SHA-256: 8551ae0263a70d1caffbcf75cca3390a60093f0a47b2edc8549c654eb69b97ef
134 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 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://bologen.ru/wix?keyword=canon+vixia+hf+r400+instruction+manual PDF link annotation
    • https://lirikilufowu.weebly.com/uploads/1/3/1/0/131070293/39ce1804db4f552.pdfIn PDF document text
    • http://qlemelest.online/motherboard_add2_support_onlyzyauz.pdfIn PDF document text
    • http://taher-tcac.com/playerunknown_battlegrounds_cd_key_activation02ps4.pdfIn PDF document text
    • http://jalakerag.22web.org/my_family_worksheets_british_council.pdfIn PDF document text
    • http://c-advance.space/novakofulojufvswz.pdfIn PDF document text
    • http://lupuneruw.iblogger.org/sekulajem.pdfIn PDF document text
    • https://cdn.sqhk.co/xonepogafix/fCvsZLM/wezowilad.pdfIn PDF document text
    • http://iglivesupportteam.com/fallout_4_script_extender_1.9.4jqfau.pdfIn PDF document text
    • https://bafexobis.weebly.com/uploads/1/3/4/0/134041027/vamipefame.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464539/normal_600ccef08fa63.pdfIn PDF document text
    • https://cdn.sqhk.co/dufolatik/gj6mygg/football_live_scores_app.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461780/normal_601aac0081c58.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/hehgnhM/heritage_auctions_dallas_tx_u._s._a.pdfIn PDF document text
    • https://xutafutixon.weebly.com/uploads/1/3/4/5/134576274/dularalijaji.pdfIn PDF document text
    • https://cdn.sqhk.co/rukugewul/bggX5jf/smash_burgers_on_blackstone_grill.pdfIn PDF document text
    • http://betflixguvenilirmi.com/lapudugofa740nb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422385/normal_601cf0e03b03e.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/wokesabisevo/aashiqui_2_movie_all_song_hd.pdfIn PDF document text
    • http://pipinodojo.epizy.com/94970174774.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_off0000db17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB17 5384 bytes
SHA-256: c4a611294f8facf12a124190d0c3bb2ee071b8579d4f8b30b49d36ec4af20ff3
font_01_sfnt_off0000ed46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED46 10416 bytes
SHA-256: 8592e12505dd6e4ec9acbc13bb0f00e69f30cf95c8e48a05774710d185d3e2f6

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