Malicious PDF — malware analysis report

Static analysis result for SHA-256 b45742eb4073d583…

MALICIOUS

PDF

82.6 KB Created: 2021-03-05 20:19:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d1152794ed8190eecda948afc1b66019 SHA-1: 94bee4c013c503f22db8624517c4018495aee386 SHA-256: b45742eb4073d583bd86d8d731b4404f4852284b67d857293313975dda42a30b
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, specifically as a phishing attempt. It contains numerous external URIs, with the primary one being a link farm designed to redirect users to potentially malicious content. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of many disposable domains and link farm characteristics strongly suggests a phishing or scam operation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • 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.
  • 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://pelibifir.ru/strik?utm_term=free+piano+sheet+music+popular+songs+intermediate
    • https://static.s123-cdn-static.com/uploads/4488804/normal_6002eb61c61a7.pdf
    • http://loduxosofaf.iblogger.org/fixupuno.pdf
    • https://static.s123-cdn-static.com/uploads/4495974/normal_5fcc98efd06b6.pdf
    • https://ronenajawewaxiw.weebly.com/uploads/1/3/4/5/134594127/b1f39.pdf
    • http://fesigemujelepir.66ghz.com/wisiwikexorowenapidanek.pdf
    • https://cdn.sqhk.co/rapovebakeb/Byigiha/pebafegutufavanalinave.pdf
    • https://namazowofurap.weebly.com/uploads/1/3/4/3/134372349/243a061b8a81ba6.pdf
    • https://cdn.sqhk.co/xadakede/PjhZVja/cake_pop_cooking_tray.pdf
    • http://roxanuveguwiz.22web.org/half_vampire_5e_race.pdf
    • https://kuzosilu.weebly.com/uploads/1/3/2/8/132815793/2b1d6c852f2.pdf
    • https://cdn.sqhk.co/kizafizutuw/a8jhDhb/fun_race_3d_mod_apk_home.pdf
    • https://torevoxun.weebly.com/uploads/1/3/2/7/132712334/3872213.pdf
    • https://cdn-cms.f-static.net/uploads/4382617/normal_6024aede2ed8b.pdf
    • https://static.s123-cdn-static.com/uploads/4367665/normal_5ffda8501222b.pdf
    • https://tiwirekofer.weebly.com/uploads/1/3/5/3/135314588/kusanisanuwoluk-suvigala.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://jariduzirozew.epizy.com/is_cyberpunk_multiplayer_online.pdf
    • http://wuxojawe.epizy.com/lalinevoladijagilafixow.pdf
    • https://uploads.strikinglycdn.com/files/f993236c-7766-4fe8-bc49-a0c18e0c8c61/dutafaxixoxal.pdf
    • https://uploads.strikinglycdn.com/files/553da036-fff7-477a-a432-8bf702850a28/bijujoxiwiwukunotajanodi.pdf
    • https://uploads.strikinglycdn.com/files/f31012c9-b22c-4ac8-a76d-110e7d135176/schwinn_comp_bowflex_parts.pdf
    • http://damedosa.rf.gd/govaf.pdf
    • https://uploads.strikinglycdn.com/files/e9a1790e-dbcc-424f-80d2-2517b42beb3c/journal_of_international_development_impact_factor.pdf
    • http://mijizukegogetip.epizy.com/what_was_aslan_name_in_the_real_world.pdf
    • http://kozirexufogepi.epizy.com/9th_grade_english_parts_of_speech_test.pdf
    • http://kedokonox.rf.gd/nitrado_ark_server_settings_guide.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f77e.bin
f229c72f9b8ce3c474e59e30c52699fc1ad5e7a5fff5b9e71984f47a260d78bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF77E 5324 bytes
font_01_sfnt_off00010962.bin
692d069da55e9d06b70a0bc6be1d433c78ae3e43c156dece33f5b6db37b45692		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10962 10692 bytes
font_02_sfnt_off00012e09.bin
b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12E09 4324 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.