Malicious PDF — malware analysis report

Static analysis result for SHA-256 6505818169ce3477…

MALICIOUS

PDF

84.4 KB Created: 2021-03-20 16:51:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: 9c0226b3b06bf7d9920ab443df5bf2d2 SHA-1: 562e806cdbc21495e6459fc10cf9a2a6a31bdbe7 SHA-256: 6505818169ce3477b0ce647fa504eceb0a9d7cf299ba1941745d28d2ba539107
126 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with high confidence. It contains numerous embedded URLs, many pointing to disposable domains and using UTM parameters, suggesting a phishing or malware distribution scheme. The PDF structure and embedded links are indicative of an attempt to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://vilenefex.ru/123?utm_term=the+accidental+superpower+pdf PDF link annotation
    • https://cdn.sqhk.co/fifotadog/cghggTK/standard_sunday_school_lesson_february_9_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/nogorodizet/c4gfhfq/zapujomok.pdfIn PDF document text
    • https://cdn.sqhk.co/fakomuse/hmjgcgd/buwetojimininesode.pdfIn PDF document text
    • https://monemoret.weebly.com/uploads/1/3/4/6/134667898/zulalebilegimoxaja.pdfIn PDF document text
    • http://sekelenogake.getenjoyment.net/what_did_the_ending_of_sharp_objects_mean.pdfIn PDF document text
    • http://xedeporib.medianewsonline.com/computer_coding_languages.pdfIn PDF document text
    • http://gomigapujasep.sportsontheweb.net/espacios_y_subespacios_vectoriales_algebra_lineal_ejercicios_resueltos.pdfIn PDF document text
    • http://rasidafepu.mypressonline.com/72713645489.pdfIn PDF document text
    • https://wazalopa.weebly.com/uploads/1/3/0/8/130814586/4377905.pdfIn PDF document text
    • https://milonotupilo.weebly.com/uploads/1/3/5/3/135347339/kedag_wukitalajokatu_jixufatakuxo_manibawara.pdfIn PDF document text
    • https://cdn.sqhk.co/jujifefa/gigi6Fz/music_video_maker_online_free_download.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
    • http://visunes.myartsonline.com/bloom_taxonomy.pdfIn PDF document text
    • http://pujusojup.epizy.com/blank_unit_circle_template.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/94313561815.pdfIn PDF document text
    • https://s3.amazonaws.com/tigewibejageju/what_is_the_meaning_of_listen_verbal_communication.pdfIn PDF document text
    • http://zibelasavu.atwebpages.com/jewenamafigalirike.pdfIn PDF document text
    • http://joxelugokolutu.rf.gd/parent_functions_and_transformations_video.pdfIn PDF document text
    • http://sujunutab.atwebpages.com/15701481695.pdfIn PDF document text
    • https://s3.amazonaws.com/gulapore/lamborghini_gallardo_price_in_india.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/pathophysiology_of_sepsis_2018.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_off0000f641.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF641 5164 bytes
SHA-256: 4c0af5b6d319f7dffd0f4175b441e7ac6bf0a03a6ea01871cfcdf6a2bec2bc23
font_01_sfnt_off000107d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107D0 17328 bytes
SHA-256: 8c9f3af75d1a11911df449b4013d5309fc7626382843604fd2a8c2dbf290d22f
font_02_sfnt_off0001345d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1345D 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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