Malicious PDF — malware analysis report

Static analysis result for SHA-256 68511455bc59147f…

MALICIOUS

PDF

125.4 KB Created: 2021-03-10 08:40:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 87c3988a51e1d59830c358981c84b036 SHA-1: 334221eaf59961876c740f42497f79f30defb345 SHA-256: 68511455bc59147f9ecfa88ad7403fa5f22cd73102cddb7ea9530a89bd131eee
126 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous embedded URLs, with at least two pointing to suspicious domains ('baarspo.ru' and 'zerkalo-fugicar.website') that are likely part of a link farm designed to redirect users. The document body, though heavily obfuscated, suggests a lure related to 'psychological theory of entrepreneurship ppt'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://baarspo.ru/wb?keyword=psychological%20theory%20of%20entrepreneurship%20ppt PDF link annotation
    • http://zerkalo-fugicar.website/which_god_is_most_powerful_in_hinducltvn.pdfIn PDF document text
    • https://cdn.sqhk.co/vipabure/hjhnTB7/centipede_2_movie_trailer.pdfIn PDF document text
    • http://idealica-italy.site/rusisezabaviwopuwoxawivoc3eu4.pdfIn PDF document text
    • https://cdn.sqhk.co/metexemoraga/fw0jfja/45483601825.pdfIn PDF document text
    • http://ostanni.fun/dark_souls_3_pontiffs_right_eyeoyrem.pdfIn PDF document text
    • http://circulshtangcalip.website/monster_hunter_world_events_2020skcln.pdfIn PDF document text
    • http://zijutepobabag.22web.org/duwelufovitotap.pdfIn PDF document text
    • https://cdn.sqhk.co/refowofiros/WihTic1/home_arcade_machine_cheap.pdfIn PDF document text
    • http://sizoxuk.22web.org/suzivozik.pdfIn PDF document text
    • http://vbnmcxz.xyz/crunchprep_gre_practice_test_reddittj51r.pdfIn PDF document text
    • https://cdn.sqhk.co/gujowaxexag/Dkhxijb/small_piano_keyboard_walmart.pdfIn PDF document text
    • https://cdn.sqhk.co/nejibija/hhehjsd/amazon_fire_tv_stick_3rd_generation.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zigimavabixexib.epizy.com/49372083299.pdfIn PDF document text
    • http://zigatikix.rf.gd/31405588383.pdfIn PDF document text
    • http://remupuxuwuved.rf.gd/padabe.pdfIn PDF document text
    • http://nudizelaf.rf.gd/wepigukud.pdfIn PDF document text
    • http://jawegoxizifiti.epizy.com/batman_return_to_arkham_asylum_trophy_guide.pdfIn PDF document text
    • https://f37c3615-20b0-4e70-b1e7-2acf34113780.filesusr.com/ugd/1e533a_08d741bce4314836a8d1751261ba1141.pdf?index=trueIn PDF document text
    • https://80172413-d145-4b71-b7cf-4a007d76ad29.filesusr.com/ugd/cacfd7_1e2b473d845c485e97bd0ed59c501475.pdf?index=trueIn PDF document text
    • http://puximonivafozij.epizy.com/how_to_fix_indiglo_light_on_timex_watch.pdfIn PDF document text
    • https://144ece88-722e-4d59-a9d1-ae16887514c2.filesusr.com/ugd/48b17f_bd80551ab5ea471e8b6ec24fcdddc9a1.pdf?index=trueIn PDF document text
    • http://xalolowoko.epizy.com/cpr_procedure.pdfIn PDF document text
    • https://850a36a1-966c-46c3-86ed-e15bcb5778a7.filesusr.com/ugd/ede58b_0c175c83128c469398284aee7a79c551.pdf?index=trueIn PDF document text
    • http://pepajefosub.epizy.com/80501262040.pdfIn PDF document text
    • http://dodemupisam.epizy.com/97543865644.pdfIn PDF document text
    • http://padepivezaw.rf.gd/rafebadolezudojutalo.pdfIn PDF document text
    • https://538d8494-0c7d-401a-b890-0485f6bc7bca.filesusr.com/ugd/29c71c_6d6b58cd84d14b0980aed75cc1ba1912.pdf?index=trueIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001b0e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1B0E0 5380 bytes
SHA-256: 5c3f0553591a9f6527bc8e38f11398c6484958278d212f6ed1f1d49e3402f702
font_01_sfnt_off0001c334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C334 10604 bytes
SHA-256: 4562b7594457dfa257e622c384e8afa143d56bacf124559c305252df1ebcbb53

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