Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9eb095d16607a1b…

MALICIOUS

PDF

75.2 KB Created: 2021-03-06 16:48:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 94d2fbbc43c33c6c9c80bf9b65979d1f SHA-1: 6bb1ac186750328fa6408e3f93dae5f324ba9669 SHA-256: d9eb095d16607a1bae51f840eb782dd2d19e3ed2c9b2ffd65d7c42753a95bcb5
156 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a phishing or malware distribution attempt. It contains a large number of external links, suggesting it is part of a link farm or designed to redirect users to malicious sites. The document body, though heavily obfuscated, contains references to Google Maps and PDF metadata, likely as a lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/aws?utm_term=google+maps+save+my+maps+offline
    • https://cdn.sqhk.co/vonezositixi/aPlyEic/33199098547.pdf
    • https://cdn.sqhk.co/sugefixa/hghhahd/74695456555.pdf
    • https://cdn.sqhk.co/kukabelek/hahjehg/download_warlings_armageddon_mod_apk_android_1.pdf
    • https://cdn.sqhk.co/jatobeguji/1hiih9P/suxaxo.pdf
    • http://xivitej.66ghz.com/81382527890.pdf
    • https://cdn.sqhk.co/fevivesuxofo/DKIThdl/101_games_in_1_ds_rom.pdf
    • https://cdn.sqhk.co/galemojubemo/yhgD8gv/beraw.pdf
    • https://cdn.sqhk.co/wemerofada/jjhgHhi/katirapibelajojotibotomu.pdf
    • https://cdn.sqhk.co/jivonaxadu/jogggiE/subusetowarumuxugi.pdf
    • https://cdn.sqhk.co/gopuxipo/Lgf4hdc/pogovikipalogepobojoxi.pdf
    • https://cdn.sqhk.co/vekasurox/3heMwhg/hospital_simulator_patient_surgery_operate_game.pdf
    • http://gevotumawifal.22web.org/tufurudotugezuxa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://451b78f8-089e-4d4d-bc4b-60abb621f7e6.filesusr.com/ugd/7ef0dc_cf467ac9d7454d1e9da5e3a82f6a7a04.pdf?index=true
    • https://c33c3ce4-fa2f-4f19-9477-7a801b41b29e.filesusr.com/ugd/ebbcbd_baef8bc69e5d47b2a2975f7da62bdcd4.pdf?index=true
    • https://uploads.strikinglycdn.com/files/3d6f4b01-f058-457d-9656-35978d5712be/sepebewi.pdf
    • https://uploads.strikinglycdn.com/files/71627db4-c7ca-4683-af74-63ba672df0e0/jumosasixesusizimaxu.pdf
    • http://tufubumokagefe.rf.gd/abstract_reasoning_test_free.pdf
    • https://5fdaa9e0-ad6d-443b-8779-beb8e45026dc.filesusr.com/ugd/05301a_c389f8c3ddec4cc6b56fbe0b54b2ac58.pdf?index=true
    • https://aefb6378-f3ca-470a-b9d2-22936542d087.filesusr.com/ugd/fe129c_9e81d4ef238b47f6beac0714912b5c9b.pdf?index=true
    • https://45180a89-8b92-4d54-a4c6-cdf0ad6af3c7.filesusr.com/ugd/2b98a3_183350b512394b5c9d73f492fe958b1d.pdf?index=true
    • https://uploads.strikinglycdn.com/files/ab5c2292-4109-4a78-9d7c-3b9490aa9961/bazevisesewitononuka.pdf
    • https://uploads.strikinglycdn.com/files/fd57b9db-e221-4070-844a-ea4d35e57a89/78080453913.pdf
    • https://uploads.strikinglycdn.com/files/6cf9fa0d-01db-40f6-85ee-6132a0585560/34672634066.pdf
    • http://dufemeg.epizy.com/85454291801.pdf
    • https://c809e8a6-5bdf-489d-8d8c-df4e4638a115.filesusr.com/ugd/45a296_850dd87622674032ae4eac0890cd12db.pdf?index=true
    • http://mowelafawugek.epizy.com/43713183908.pdf
    • https://78fa80b2-8629-447b-ad63-53e91e8d4948.filesusr.com/ugd/8f02de_b2cadad01e104ac2a9321bedc74f0e9f.pdf?index=true
    • 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_off0000e7b1.bin
242dd6e634b88f3915c53458decc82bfff6f103c2501b235758165831ee465c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B1 5316 bytes
font_01_sfnt_off0000f9cf.bin
cda61196cbd8dc4e5e8a7e526544d1711b02521614ee9b0edf8a2ee0b0637781		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF9CF 10784 bytes

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