Malicious PDF — malware analysis report

Static analysis result for SHA-256 b908f72c519574f6…

MALICIOUS

PDF

187.4 KB Created: 2021-03-15 00:07:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 591aa802c2d822a8257eb4ee37514b6b SHA-1: ecdda20b0b85fad461850be45ca75529ca1dcbc9 SHA-256: b908f72c519574f6aec899a4ba5464c8f0f42a9eff5b03b4102fda511cad041e
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged by multiple heuristics, including ML classification and ClamAV, indicating malicious intent. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic suggests the document instructs users to copy and paste content into a shell, a common tactic for executing malicious commands. The presence of external URLs, such as 'https://lozipotod.ru/wix?keyword=rtc+south+strip+transfer+terminal+to+airport', indicates potential download or redirection to further stages of an attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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) 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://lozipotod.ru/wix?keyword=rtc+south+strip+transfer+terminal+to+airport PDF link annotation
    • http://themarkuzmusic.com/tikenirijijefa7qu.pdfIn PDF document text
    • https://lugafowak.weebly.com/uploads/1/3/4/6/134647172/e7a6339e00c.pdfIn PDF document text
    • http://zugasanuko.getenjoyment.net/zumatadere.pdfIn PDF document text
    • http://varietystore.website/kaspersky_antivirus_2018_android_apkf3hg0.pdfIn PDF document text
    • http://gajelifuluxapov.mywebcommunity.org/lijoji.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405413/normal_5fd149cf5018b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487208/normal_5fd2d41715046.pdfIn PDF document text
    • http://newyearshop.site/27972537039u9pni.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480170/normal_602ac9d0c333b.pdfIn PDF document text
    • http://wubujonil.getenjoyment.net/bomigakixu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451047/normal_5fe6e91591114.pdfIn PDF document text
    • http://lerimofo.mywebcommunity.org/74564291317.pdfIn PDF document text
    • https://tobadagagu.weebly.com/uploads/1/3/4/7/134750152/256562.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380681/normal_60114944ecc7c.pdfIn PDF document text
    • http://circulyarkadigital.xyz/nejurabawodutilutusig7w2k.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/dumupa/vujukom.pdfIn PDF document text
    • http://gafodix.myartsonline.com/84747750873.pdfIn PDF document text
    • https://s3.amazonaws.com/safago/20051680363.pdfIn PDF document text
    • http://jabodegodonirad.atwebpages.com/60116242144.pdfIn PDF document text
    • https://s3.amazonaws.com/wobuzisibal/water_pollution_journal.pdfIn PDF document text
    • https://s3.amazonaws.com/jasadavebaga/96557655846.pdfIn PDF document text
    • http://segurixuzek.myartsonline.com/simplifying_expressions_with_rational_exponents_and_radicals_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/baaton_ko_teri_song_bestwap.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_off0002a426.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A426 5260 bytes
SHA-256: 6eecfcad2e43d11d3da284637c1301a95852aea37a952d7425f32c4af41b8480
font_01_sfnt_off0002b5e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5E7 12016 bytes
SHA-256: edc413feb83ce29baa3d1fa442dce3a96ab5c774c4a9ff3df6829115d306e00c

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