Malicious PDF — malware analysis report

Static analysis result for SHA-256 08eba456bbe2c145…

MALICIOUS

PDF

74.8 KB Created: 2021-03-18 19:21:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 0ab1fd0979a1fbd87b2305720a7056d2 SHA-1: 28345cdc4dc7a0e3f90ed8c6557fa12924a9fae5 SHA-256: 08eba456bbe2c145110dfd544cf0c2bb5d1db29b3a7336dbaf3ab9ca6a7e59a3
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with one heuristic specifically identifying a 'PDF_SEO_LINK_FARM' suggesting a malicious intent to direct users to potentially harmful sites. ClamAV and ML classifiers also flagged this PDF as malicious, indicating it's likely a phishing or malware distribution lure. The presence of embedded URLs further supports this, pointing towards an attempt to redirect users to external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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 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.
  • 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://midufefew.ru/strik?utm_term=java+swing+button+listener PDF link annotation
    • http://xepuxupipe.mywebcommunity.org/washing_machine_troubleshooting_guide.pdfIn PDF document text
    • http://roboludawu.mywebcommunity.org/guzojukimofalu.pdfIn PDF document text
    • http://jedusajinud.mygamesonline.org/dewalt_20v_max_xr_hammer_drill_kit.pdfIn PDF document text
    • https://cdn.sqhk.co/donewipimep/RTXzB1D/jagasilegoritejasizatuma.pdfIn PDF document text
    • https://tigasedoxopafu.weebly.com/uploads/1/3/4/7/134707490/8310407.pdfIn PDF document text
    • https://cdn.sqhk.co/benanejufa/UQKG1jc/bididon.pdfIn PDF document text
    • https://kepedeko.weebly.com/uploads/1/3/5/9/135959580/nuxalajejugazu-dalimuramal.pdfIn PDF document text
    • http://zonizubiro.getenjoyment.net/what_is_meant_by_knowledge_economy.pdfIn PDF document text
    • https://cdn.sqhk.co/jivomawufem/igNhcEU/t-_rex_runner_3d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/79f6f24c-adc3-4d1e-910d-cde3fb8c93fe/dakosetubisirax.pdfIn PDF document text
    • http://lewinozed.atwebpages.com/183638198.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/country_walking_line_dance_step_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/mebubirifevoz.pdfIn PDF document text
    • https://s3.amazonaws.com/nasitevu/kindergarten_boyfriend_sheet_music_piano.pdfIn PDF document text
    • http://dejibokakar.onlinewebshop.net/finders_keepers_movie_2014_wiki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53502399-c800-4f40-b99f-5137aa16a3e0/twilight_full_movie_in_hindi_download_480p_dual_audio_720p.pdfIn PDF document text
    • http://powagamojij.onlinewebshop.net/bundesliga_2020_19_spielplan.pdfIn PDF document text
    • https://s3.amazonaws.com/wovedukevikov/2013_dodge_charger_sxt_rwd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a2fc2a-e589-44ea-b772-b22f1ee1cf0a/fedizesokasafagitij.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/075a4d84-7be6-4585-a037-a273c85141de/86767487928.pdfIn PDF document text
    • https://s3.amazonaws.com/punagilelabon/basara_2_ppsspp_android_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc6f2790-7a50-42f8-a7fe-5e28faebf102/immanuel_kant_philosophy_of_self.pdfIn 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_off0000e4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E9 5136 bytes
SHA-256: 8d3d062fa0aaad2dc4f7641c3aa48666e3c430db5b27219e40cfe8758b9c521b
font_01_sfnt_off0000f687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF687 11624 bytes
SHA-256: dc4187b6334b41bbfd595cfa228f7301978238626bfb427f176160c851cbd8b8

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