Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ffc52e5f167f90b…

MALICIOUS

PDF

65.4 KB Created: 2021-03-17 13:00:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32d5cdb59d3d5fd4eac0e894a8e340d8 SHA-1: 45c3375a437332ed3ce756323a4276f2dd68ac3f SHA-256: 2ffc52e5f167f90bd8f4a7156240001776580c62a950595515569036620d3b91
152 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, indicating an attempt to lead the user to a malicious site. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though heavily obfuscated, contains text related to equations and PDF, likely a lure to disguise the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9263

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/award?keyword=bruchgleichungen+mit+l%25C3%25B6sungen+pdf
    • https://cdn.sqhk.co/zanemulazif/bjgbm2T/22219299753.pdf
    • https://cdn.sqhk.co/wukufazujuv/Vhhpgg6/lovecraft_country_episode_2_cast.pdf
    • https://cdn.sqhk.co/valujoper/brgeicF/81758154222.pdf
    • http://shop-you.xyz/beirut_hotel_2011wwvcb.pdf
    • https://cdn.sqhk.co/pamezuravuno/qNidBid/yellowstone_season_4_finale_spoilers.pdf
    • http://shopsupergood.site/jufiruzebuduravydec4.pdf
    • http://de-bewertung-id2842384.icu/sitemap_template_xdl1c14.pdf
    • http://rocketdocs.us/chaine_dinformation_et_dnergie_viergek4geh.pdf
    • https://cdn.sqhk.co/mekibekowufe/hhIghhh/gegomisuboruzuz.pdf
    • http://1fps.ru/finish_powerball_quantum_max_safety_data_sheet75wm4.pdf
    • https://cdn.sqhk.co/wadupaxi/gzhfYA5/59158615349.pdf
    • http://pipabineki.22web.org/12196619088.pdf
    • http://izzzaaa.space/fce_english_test11sv4.pdf
    • https://cdn.sqhk.co/wumidimux/hjfhg8D/datarusevufojavuwasoven.pdf
    • http://pubgmobiie.com/how_to_avoid_conversations_at_worko60xa.pdf
    • https://cdn.sqhk.co/gapevusa/idjjKhf/premier_league_fantasy_football_tips_gameweek_30.pdf
    • https://cdn.sqhk.co/nixivezez/hggiajK/54972096775.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://dakubevudepobat.rf.gd/benizivopuzibufufol.pdf
    • http://tejutavufoxif.epizy.com/xupigagis.pdf
    • http://folezazav.epizy.com/cerberus_asus_keyboard_manual.pdf
    • http://nozosikela.rf.gd/cowboy_bebop.pdf
    • http://gosenovalik.epizy.com/human_centered_design_toolkit.pdf
    • http://ralepixevoz.epizy.com/eduardo_galeano_las_venas_abiertas_de_latinoamerica.pdf
    • http://jizuwugi.rf.gd/is_it_worth_to_buy_s9_plus_in_2020.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d947.bin
8e32eff4dc17b57d9af75b8b4965337ed5fcbe63642584db32a1836b6d573dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD947 5544 bytes

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