Malicious PDF — malware analysis report

Static analysis result for SHA-256 7cb8f6c949750eba…

MALICIOUS

PDF

78.6 KB Created: 2021-04-26 18:29:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8546b00fa845c15bd8e1fc30de2a19c SHA-1: da6704d22625bf88dc416e00aa622af929d4ea13 SHA-256: 7cb8f6c949750eba3f70d95ef2cab0797ed630b507b8fb8ad5af0c875dc519c4
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL that redirects to a malicious domain, likely to deliver a secondary payload or phish for credentials. ClamAV and ML classifiers strongly indicate malicious intent, and the document body, though obfuscated, suggests a lure related to environmental science to entice users to click the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://seumenha.ru/strik?utm_term=how+did+volcanoes+affect+the+environment
    • http://nitapida.mywebcommunity.org/samacheer_maths_book_class_10.pdf
    • http://qwert-ita.fun/muwawupimajanars5eg.pdf
    • http://antileqphh.site/how_to_check_if_painting_is_real_animal_crossingsr40e.pdf
    • https://cdn.sqhk.co/firumefetev/jfDjBfH/leatherworking_guide_gw2_1-_500.pdf
    • https://cdn.sqhk.co/rexazileka/iihbxsN/28371411161.pdf
    • http://nadefememidep.medianewsonline.com/camus_resistance_rebellion_and_death.pdf
    • https://cdn.sqhk.co/melobokodijo/jdvjaja/vocabulary_synonym_test.pdf
    • http://femetorisufi.sportsontheweb.net/tom_clancy_jack_ryan_jr_series_reading_order.pdf
    • http://hookup681.site/what_to_plant_in_florida_in_octoberd4klk.pdf
    • http://lokubakodo.getenjoyment.net/asciidoctor_footer.pdf
    • http://newsportstechnology.ru/wolewr772z.pdf
    • https://cdn.sqhk.co/fedelubu/UOghhbm/bowling_online_2_2._3.pdf
    • https://cdn.sqhk.co/suxupijisajo/eijbji0/wordscapes_level_8025.pdf
    • http://jiwapadenejeza.getenjoyment.net/sapuximulob.pdf
    • https://cdn.sqhk.co/musutalivun/igLqiiO/90_s_dance_music_mix_mp3_download.pdf
    • http://akmurzina.com/liftmaster_8355_manual2onoy.pdf
    • http://3bureaureport.info/journey_to_the_west_movie_streamingltjef.pdf
    • http://goldalbum.ru/how_to_unlock_whirlpool_duet_front_load_washernwvyc.pdf
    • http://snatural.space/487730499569ogm9.pdf
    • http://fakaripeti.xyz/niwekajazepewekevulolelcza.pdf
    • http://paruxezogu.mygamesonline.org/81910115994.pdf
    • https://cdn.sqhk.co/gidetixi/agfihib/23869748871.pdf
    • http://wuramegojuluz.mywebcommunity.org/i_was_sitting_at_the_counter_song.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000f04f.bin
eff4fa33e99881ab71b32477a1d63453d72011db86e517a1b51cdf15fce5ea1e
pdf-font-stream PDF embedded font (sfnt) at offset 0xF04F 5372 bytes
font_01_sfnt_off00010287.bin
eda855456742563556d4be196534af30e1fd74f7756cc210852a237ad26d971b
pdf-font-stream PDF embedded font (sfnt) at offset 0x10287 12404 bytes