Malicious PDF — malware analysis report

Static analysis result for SHA-256 495d91456a26422d…

MALICIOUS

PDF

79.3 KB Created: 2021-04-07 05:28:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-10
MD5: 4c343f28650cc992c81c910bf8d0b469 SHA-1: 7d22ac2bae138b4589650c1c9af46b3e2abd5831 SHA-256: 495d91456a26422df80f8ca4debd61812ede980272611c77fef6e10b92ac6bd9
96 Risk Score

Malware Insights

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

The PDF contains an embedded URL pointing to a suspicious domain, likely intended to host malicious content or redirect the user. ClamAV and ML classifiers strongly indicate malicious intent, classifying it as a phishing trojan. The document body, though heavily obfuscated, suggests a lure related to 'Tableau des armatures pdf', aiming to trick users into visiting the external URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://kuzutuzo.ru/award?keyword=tableau+des+armatures+pdf PDF link annotation
    • http://gallery-shop.site/mens_health_strength_training_programz1gye.pdfIn PDF document text
    • http://appless.space/garmin_forerunner_745_release_dateuxwal.pdfIn PDF document text
    • http://barcaporirternet-interbank-pe.com/what_kind_of_ammo_does_a_sig_p365_useeio2j.pdfIn PDF document text
    • http://muxoman.mygamesonline.org/use_articles_english_grammar.pdfIn PDF document text
    • http://cosmostil.top/disneyland_california_map_2020rk3hg.pdfIn PDF document text
    • http://detonic-italia.website/lepazeporifebaz9e1ju.pdfIn PDF document text
    • http://henrysavbr.site/25890947222blwyu.pdfIn PDF document text
    • http://axecheat5.xyz/adeptus_mechanicus_codex_vkzohbp.pdfIn PDF document text
    • http://fherixq.com/fuzalizoxigitawokam2ycf.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f9c81679-ddb1-4746-ab40-32673edc426c.filesusr.com/ugd/2eff39_dcc5fcd6d51d4868a0a0cf78fd2dc662.pdf?index=trueIn PDF document text
    • https://5de9ed01-d610-4143-94db-6f998645a8ce.filesusr.com/ugd/1d8bf6_c28927b336cd464991ecc57b64d8b561.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/sutawowirosuvuv/internship_training_program_template.pdfIn PDF document text
    • https://s3.amazonaws.com/divelatoxa/rerowerasujinetamafo.pdfIn PDF document text
    • https://cee4c475-053c-4dec-97e8-987d41263e46.filesusr.com/ugd/8c25c6_00fba098869c4eec96e0eeae881325ef.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/pubopelej/minions_2015_tamil_dubbed_movie.pdfIn PDF document text
    • http://zatuvejamubolo.atwebpages.com/44741846425.pdfIn PDF document text
    • https://1423d76f-a56f-4481-bf87-726e17039346.filesusr.com/ugd/14aee2_768e9b123b0e414183e862caf2574976.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/xarojapi/vizio_sound_bar_5.1_pairing_subwoofer.pdfIn PDF document text
    • https://66f9544f-8325-470d-a543-c07714603334.filesusr.com/ugd/4b2642_38b9117452fc4ff985a1d2b97d6c3e8b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fovezewi/android_api_key_google_maps.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/nupopevemolebizized.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_off0000f2f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2F1 5276 bytes
SHA-256: 81f2a3137d7a97852a7e1a3f091d6e45d6419391b386e1ac3b780ee91adf4907
font_01_sfnt_off000104c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C0 13008 bytes
SHA-256: 22788cffe559f28e66dfcba5e655117e4983de05ceb7a0d73bde6d44623f9ca2

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