Malicious PDF — malware analysis report

Static analysis result for SHA-256 70e4da0e6e8db292…

MALICIOUS

PDF

78.8 KB Created: 2021-03-22 23:33:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69168dcb528138815425050afea76aae SHA-1: 5f7331d0f4fe7e8f5e6fc58f27c1905ce5b4e4b6 SHA-256: 70e4da0e6e8db292d026de4481df16a97b4e1bf89513c74a7cc925eecaa25a19
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, identified by ML classifiers and ClamAV as malicious. The document body, though heavily obfuscated, suggests a lure related to a 'guide'. The presence of multiple external URLs further supports a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/wix?keyword=spire+of+stars+prestige+guide
    • http://noturufupama.iblogger.org/begum_rokeya_university_admission_circular_2020_18.pdf
    • http://it50disconto.info/clicker_keypad_does_not_working_on_iphone70c2v.pdf
    • http://mir23.xyz/zunakofokuzerowikegag4izlt.pdf
    • http://amorexpo.com/humminbird_859ci_hd_power_cable7qx1t.pdf
    • http://moxilekulina.getenjoyment.net/sesulujanusa.pdf
    • http://klosheff.xyz/rifekelixanafowufibokegeri3jhy.pdf
    • http://xilatotes.sportsontheweb.net/where_to_donate_used_pet_supplies.pdf
    • http://xozonline.ru/vlc_for_android_tv_4._4._2fwjrp.pdf
    • http://astrohelp.space/gonusipininuyf6on.pdf
    • http://tixshopclub.fun/grigori_grabovoi_methode_book71x76.pdf
    • http://frut-tree.site/kali_linux_android_tools_installhelqi.pdf
    • http://mifvideo.space/nexipigoxefunhq8oz.pdf
    • http://garantiya62.ru/what_are_the_strengths_and_weaknesses_of_transformational_leadershipzvpzm.pdf
    • http://jotafitosixa.getenjoyment.net/50502388825.pdf
    • http://moneymaya.site/whats_another_word_for_left_out58nm3.pdf
    • http://bilet-pdd.site/70949674622hy3x0.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tezuzatarezoz.epizy.com/73866000366.pdf
    • https://s3.amazonaws.com/gezizefefififa/76294171535.pdf
    • https://s3.amazonaws.com/vajefam/demographic_sheet_for_research.pdf
    • https://s3.amazonaws.com/biwuwukesazef/68979495267.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_off0000f652.bin
1661ea95fbaf4b3e430083f03c4086eaca1fb69a42acf32b7bf78a71dc598707		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF652 5280 bytes
font_01_sfnt_off00010853.bin
ae684c7b567de72dedca6a99149288c624a2324604a6748fa7fd3b2da5b77c7e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10853 11028 bytes

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