Malicious PDF — malware analysis report

Static analysis result for SHA-256 a29228af212a2df6…

MALICIOUS

PDF

90.5 KB Created: 2021-04-26 18:42:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 2fd7ab029739b2a9a6bb4b048881fa20 SHA-1: cd5af39d56ada946f184c0cc8d4dc985d8a0c4ed SHA-256: a29228af212a2df626715dee0d8f7ab3c17250e05b063d4d3b07e726e5c8cd77
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable hosting, and is flagged by ML and ClamAV as malicious phishing content. The document body, though heavily obfuscated, contains references to 'The secret by rhonda byrne audiobook' and 'wkhtmltopdf', suggesting a lure to a potentially malicious site disguised as a resource link. The presence of external URIs and link farm heuristics indicates an attempt to redirect users to external, potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9912

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://nipisod.ru/strik?utm_term=the+secret+by+rhonda+byrne+audiobook PDF link annotation
    • http://medolufinumul.sportsontheweb.net/mapa_metrobus_insurgentes.pdfIn PDF document text
    • http://craftsmansmetics.com/zutodotinonavujfnuz.pdfIn PDF document text
    • http://kobivoweder.mypressonline.com/32928483117.pdfIn PDF document text
    • http://deladinabixek.sportsontheweb.net/lippincott_s_photo_atlas_of_medication_administration_5th_edition.pdfIn PDF document text
    • http://dokaxirugik.medianewsonline.com/5843045838.pdfIn PDF document text
    • http://vashastrahovka24.ru/fapomalukezofurikepejujiq8pjq.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/ejemplos_de_dialogos.pdfIn PDF document text
    • http://znalomstvavip.site/dadadagetobifexijinepeif13i.pdfIn PDF document text
    • http://gomijexa.mywebcommunity.org/33523794475.pdfIn PDF document text
    • http://llloooodddd.space/why_is_my_creepy_crawly_not_workingwx704.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a3829eb-bec4-40fe-9a09-546bba43f167/uglys_electrical_reference_in_spanish.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a039b13-cde3-4e3b-9ff2-e4a5f633770d/echo_cs_590_timberwolf_problems.pdfIn PDF document text
    • http://xirexadugimog.atwebpages.com/46767121178.pdfIn PDF document text
    • http://visugog.myartsonline.com/learning_advanced_ms_excel.pdfIn PDF document text
    • http://xabudavadeguvo.myartsonline.com/loop_antenna_design.pdfIn PDF document text
    • http://movuzawizigevej.myartsonline.com/alpine_iva-w505_wiring_harness.pdfIn PDF document text
    • http://luzojora.atwebpages.com/jpg_to_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ab337f0-7852-4c15-9245-3355be3ab5c2/can_i_use_my_xbox_turtle_beach_headset_on_ps4.pdfIn PDF document text
    • http://teropisarazo.myartsonline.com/test_para_evaluar_autismo_en_nios.pdfIn PDF document text
    • https://2b12d24f-0c9a-4a32-b427-430aba395f0c.filesusr.com/ugd/6cfe90_2dd4bde359054e6c8b05e569159f99b8.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/50390f34-2334-433d-bd48-216cecb072b2/breckwell_p22_pellet_stove_troubleshooting.pdfIn PDF document text
    • https://7ed754b6-a209-4558-9281-0032c7ee8ade.filesusr.com/ugd/4329d7_86021e14034246d8a5fd3ead954bbbe6.pdf?index=trueIn PDF document text
    • https://9579f988-9383-433c-acf3-5fff76e0c882.filesusr.com/ugd/191a6d_746526ce0df14b538e0d2ace507ebef5.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d72a3938-4b8d-4e00-93f2-46953af76972/gegogodonaraporowuxe.pdfIn PDF document text
    • http://moxadokikubod.onlinewebshop.net/44849346127.pdfIn PDF document text
    • http://sudexixurijaxoz.atwebpages.com/tm_074_outdoor_timer_manual.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ee0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0C 5248 bytes
SHA-256: 5d75b8e35302bd84c0e1abb609c5272289f905d5022b78ae820853238ba00831
font_01_sfnt_off0000ffe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE0 1860 bytes
SHA-256: 60216f7dc102888901cb4e20ea17d0d3fee02ae19c5bdd3e46ffa69bc173d191
font_02_sfnt_off000108d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D9 11400 bytes
SHA-256: e020b3264f2652b70b54d1768ae5e69e6e5536c5be84a521a7770910404ac35a
font_03_sfnt_off00012fc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FC8 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e
font_04_sfnt_off00014534.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14534 6496 bytes
SHA-256: dcfacc0a20cd102fba40741be1473b77f0a1772357d59dc6e056aad4d59bea19

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