Malicious PDF — malware analysis report

Static analysis result for SHA-256 1baec1145e1ff8e1…

MALICIOUS

PDF

81.2 KB Created: 2021-03-25 13:32:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 446189f3e97fb7a42158b81ba1868e69 SHA-1: 2b6b39153f6a3c22ab59023fb428dda70aecfd30 SHA-256: 1baec1145e1ff8e14e8c775d8b8e4bd43e2af95bb8d49a7ec58e22e1d60c7ba3
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, appears to be a lure related to 'Animal Farm', suggesting a phishing or malware distribution attempt. The presence of external URIs and link farm heuristics indicates a strong intent to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://resalured.ru/strik?utm_term=animal+farm+chapter+7+summary+and+analysis PDF link annotation
    • http://hallop.xyz/3053581395647pdx.pdfIn PDF document text
    • http://logvoz.ru/36945883549oy3cx.pdfIn PDF document text
    • http://mp4.design/670367234307tm2c.pdfIn PDF document text
    • http://edaruzal.xyz/71270943448zr8bq.pdfIn PDF document text
    • https://cdn.sqhk.co/pixazizaze/ibhaygi/game_real_craft_3d_mod.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/ijhexj7/zunibusigalibunuwu.pdfIn PDF document text
    • http://websporizlehd.com/12341632958txmtu.pdfIn PDF document text
    • http://mignonette.space/chocolate_hd_video_song_freemjzbd.pdfIn PDF document text
    • https://cdn.sqhk.co/lulaxujik/W9FicLj/lodafexejodedemisobunux.pdfIn PDF document text
    • https://cdn.sqhk.co/xixujipum/jjje35a/german_bundesliga_live_table.pdfIn PDF document text
    • http://grenkasalo4.xyz/my_kenmore_garbage_disposal_is_leaking_from_bottomn8px6.pdfIn PDF document text
    • http://frankiearvelo.com/giduwalakabomar93c8q.pdfIn PDF document text
    • http://potenciy.xyz/857276181266bha2.pdfIn PDF document text
    • https://cdn.sqhk.co/gorokipo/nZjidFm/tramp_simulator_survival_city.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/aghigie/super_sniper_shot_movie.pdfIn PDF document text
    • http://lnstagramsupportinfo.com/pte_academic_vocabulary_listai5i1.pdfIn PDF document text
    • https://cdn.sqhk.co/bidomutarili/jihb6hb/class_7th_civics_chapter_3_answers.pdfIn PDF document text
    • http://neo-tp.ru/tejepaxawopebujozimukaxif8amn.pdfIn PDF document text
    • http://appless.space/premiere_pro_download_free8cf7w.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/fff38e78-3fe2-4793-992b-37b3266f2f17/graphs_of_other_trigonometric_functions_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/352a40ff-afc5-4e1d-9878-7c95fd688fa1/instructions_for_a_clear_blue_pregnancy_test.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49b32ffb-6500-4781-b973-42388b6267e8/57451792426.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38f74af8-730c-4376-b1e4-2f528191778e/internal_combustion_engine_working_animation.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF364 5340 bytes
SHA-256: 81453f4c96de956bf58943b34a78349dec721979be10f6c4ac0e8ed298d685e1
font_01_sfnt_off0001055a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1055A 10364 bytes
SHA-256: faf3d5b14953f744ab62001acd5f58e4e347b7bd2559a79c3c07af7a52dd66fa
font_02_sfnt_off000128a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128A5 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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