Malicious PDF — malware analysis report

Static analysis result for SHA-256 d75926af6d185d50…

MALICIOUS

PDF

127.1 KB Created: 2021-03-21 05:01:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8a61dc6ff782dfc87461904b83a0f151 SHA-1: 272fc94939f1a04e9894d6cebdcac61437f470d5 SHA-256: d75926af6d185d501c1d212e5af1e6e6d18a9e3852d0886cd362593cb5ecb2e3
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, which is likely used to host a malicious payload or phishing page. The document body, though heavily obfuscated, contains text related to a book title, suggesting a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://pelibifir.ru/strik?utm_term=the+odyssey+robert+fagles+online
    • https://cdn.sqhk.co/nizudezed/0ge35gi/cars_2_full_movie_online.pdf
    • https://cdn.sqhk.co/jekefebiba/hjgijg3/a_dark_dragon_vip_3._33_mod.pdf
    • https://cdn.sqhk.co/gojapawareke/hafSda2/trivia_crack_kingdoms_online_pc.pdf
    • http://bejisosubonito.sportsontheweb.net/how_to_make_simple_homemade_ice_cream.pdf
    • http://voirlo.xyz/ritixofelujuvav7ahji.pdf
    • http://asia.kiwi/38890077883fmssw.pdf
    • http://hrushch.space/endgame_beckett_analysiszzvw9.pdf
    • http://streamsweets.com/xizexotivijizuzeralu9nutt.pdf
    • https://cdn.sqhk.co/rasetiwulipu/bB3gzeG/bears_packers_predictions_2019.pdf
    • https://cdn.sqhk.co/xafiguzi/bidighh/jawuvosebivurekew.pdf
    • http://mamontov-net.cc/37679948203j3zwr.pdf
    • http://lixodamevurobar.mygamesonline.org/44539293946.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://xitimevekotumev.rf.gd/83042734591.pdf
    • https://s3.amazonaws.com/jawusawar/lumusekenajikigutidagas.pdf
    • https://s3.amazonaws.com/wunupalezozerud/criticism_of_structuralism.pdf
    • http://pivimufe.atwebpages.com/south_beach_diet_supercharged_exercise_plan.pdf
    • http://rojanesifilagu.myartsonline.com/78697369111.pdf
    • https://s3.amazonaws.com/fazujo/brown_bear_brown_bear_coloring_pages.pdf
    • http://latowetutut.epizy.com/solving_trig_identities_worksheet.pdf
    • https://s3.amazonaws.com/wukevirenesu/76743295138.pdf
    • http://sinusisokopex.atwebpages.com/the_bipolar_ii_disorder_workbook.pdf
    • https://s3.amazonaws.com/mexesazaxasa/casio_fx_300es_plus.pdf
    • http://gamelaluwer.myartsonline.com/vibugori.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b694.bin
70e980763e68260bbdb415d8298ba58f12afb0f4dffc41ff5947f89d10b116ee
pdf-font-stream PDF embedded font (sfnt) at offset 0x1B694 5360 bytes
font_01_sfnt_off0001c8ce.bin
39b02632363f02938910679410faac8d57e75ece175112adc166445719093919
pdf-font-stream PDF embedded font (sfnt) at offset 0x1C8CE 11136 bytes