Malicious PDF — malware analysis report

Static analysis result for SHA-256 78da2f3cb9e86893…

MALICIOUS

PDF

239.9 KB Created: 2021-03-28 17:21:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f852b88ed961f104d25e6c7f32578e7 SHA-1: 7ac3edc22217c52510591a0080c496728a057ff9 SHA-256: 78da2f3cb9e8689337adffd96049aaab5042a6e0251c8f09e529435e3fd3a706
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, and contains an embedded URI pointing to a suspicious domain. The document body, though heavily obfuscated, suggests a lure related to an 'ffxi black mage leveling guide'. The presence of external URIs indicates an attempt to redirect the user to a potentially malicious site for further exploitation or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9858

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://mezovuduw.ru/wix?keyword=ffxi+black+mage+leveling+guide
    • http://usersdeviceprotectionservice.site/spanning_tree_protocolaypei.pdf
    • https://cdn-cms.f-static.net/uploads/4495264/normal_600c1b1869ae6.pdf
    • https://cdn.sqhk.co/mafowixodi/JhhifqW/best_slashing_sharpshooter_build_2k21.pdf
    • https://negofugino.weebly.com/uploads/1/3/4/5/134529575/vawikomes.pdf
    • http://lasiwefomibew.sportsontheweb.net/18831782788.pdf
    • https://jupuwova.weebly.com/uploads/1/3/1/4/131409597/bowimalagetesidot.pdf
    • https://cdn-cms.f-static.net/uploads/4415334/normal_605b90ac9fb37.pdf
    • https://cdn.sqhk.co/lewewita/vKhibRM/castlevania_aria_of_sorrow_soul_collecting_guide.pdf
    • http://tomokatixo.mygamesonline.org/20267805617.pdf
    • http://zegererevez.medianewsonline.com/vixopopexomilokun.pdf
    • https://jumolixebeze.weebly.com/uploads/1/3/4/3/134352805/luwoxobokod_jafakimaj_ruviravetaf_ruwerage.pdf
    • https://static.s123-cdn-static.com/uploads/4417648/normal_60000e8891751.pdf
    • http://moymagazin.xyz/344561582053a1dc.pdf
    • http://ostanni.fun/hobart_4322_meat_grinder_manualnx2ka.pdf
    • http://talkme-news.info/number_in_words_in_crystal_reportsw61on.pdf
    • https://static.s123-cdn-static.com/uploads/4366956/normal_6007c90e4f0e6.pdf
    • http://moxawunanenubop.sportsontheweb.net/aseptic_food_processing.pdf
    • https://cdn.sqhk.co/luwojafewu/ghiUjbX/fidoxitalulib.pdf
    • https://kosilamegorigi.weebly.com/uploads/1/3/1/4/131409210/50b68.pdf
    • http://1xbets-regs.site/why_dont_books_have_age_ratings3wa9t.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xijalovelokolep/does_dish_network_have_fox_sports_southwest.pdf
    • https://s3.amazonaws.com/sazomo/bucket_list_movie_free_in_marathi.pdf
    • http://sivikonalijuto.myartsonline.com/does_samsung_smart_tv_support_screen_mirroring.pdf
    • https://s3.amazonaws.com/lerezazo/bissell_little_green_machine_hose.pdf
    • https://s3.amazonaws.com/sevoga/information_classification_levels_restricted.pdf
    • https://s3.amazonaws.com/wejuvono/debeperisile.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_off00037422.bin
19c7f017832ca3d050d5b8d245968feda5629f1877dc60c824625b0e7f16bbd6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x37422 5352 bytes
font_01_sfnt_off00038660.bin
dbc1b0c6125a9ba89842680cc80ff14dfdcd1c414f1d6cbb3e680f76a307d419		 pdf-font-stream PDF embedded font (sfnt) at offset 0x38660 12340 bytes

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