Malicious PDF — malware analysis report

Static analysis result for SHA-256 43a86a6046dbec30…

MALICIOUS

PDF

79.2 KB Created: 2021-03-07 19:46:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1f68f6da08cbef7a7ef3ad418442b7b3 SHA-1: 589c8a59061b7b625ccd30466f51b0e4d336cce6 SHA-256: 43a86a6046dbec30d158db0e7801dd968e7c24fc4d87b32abb88d53369f1b256
96 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=why+use+quizizz PDF link annotation
    • http://jefevivavifax.scienceontheweb.net/how_to_turn_on_sole_f60_treadmill.pdfIn PDF document text
    • http://tepugorotewole.medianewsonline.com/yoga_poses_for_weight_loss_step_by_step.pdfIn PDF document text
    • http://zesegalos.scienceontheweb.net/the_bluest_eyes_in_texas_chords.pdfIn PDF document text
    • http://thelandofbadideas.com/harry_potter_series_5_cast6aeim.pdfIn PDF document text
    • http://bimizuzi.sportsontheweb.net/madwoman_in_the_attic_novel.pdfIn PDF document text
    • http://sokobumoxagug.scienceontheweb.net/fijekefilor.pdfIn PDF document text
    • http://wogivodugakovek.mygamesonline.org/how_to_use_fixon_denture_adhesive_powder.pdfIn PDF document text
    • http://wejuzofibab.medianewsonline.com/jedibofi.pdfIn PDF document text
    • http://ligexekena.mywebcommunity.org/viper_4105v_remote_start_installation_manual.pdfIn PDF document text
    • http://narovomesizi.medianewsonline.com/measures_of_relative_standing.pdfIn PDF document text
    • http://stavki-na-sport.site/babudapijowotosigavukhvoz4.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/mekonulegipero/ladenusezubosuki.pdfIn PDF document text
    • https://s3.amazonaws.com/dazuxujepov/polaris_atv_accessories_catalog.pdfIn PDF document text
    • http://gujimosodaza.myartsonline.com/how_to_clean_a_aroma_rice_cooker.pdfIn PDF document text
    • http://gaxilitexu.onlinewebshop.net/dasivivido.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/53254174108.pdfIn PDF document text
    • http://wejajesenopezoj.onlinewebshop.net/how_do_you_clear_a_low_battery_on_a_2gig.pdfIn PDF document text
    • http://wufikemofumop.atwebpages.com/6.0_powerstroke_oil_cooler_replacement.pdfIn PDF document text
    • https://s3.amazonaws.com/zurovajij/htc_10_android_8_battery_drain.pdfIn PDF document text
    • http://wipadafefuxasi.onlinewebshop.net/ketuwepiworetaxuvuf.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e46e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE46E 4724 bytes
SHA-256: a17feadaafc998ac3ba24f26f6ee6ac53f7e83a041727ef42f425f1603263225
font_01_sfnt_off0000f4a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4A4 10952 bytes
SHA-256: cd62cff52840a983abff24e1f0d3b8b939114b1bcd06ad7ff73ef249991c9bfa
font_02_sfnt_off00011a30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A30 16192 bytes
SHA-256: 9c7926b8929b88a1dffb52ec04bcfb477868fd459509337312ce674bafabbb6a

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