Malicious PDF — malware analysis report

Static analysis result for SHA-256 9400cb595953f53d…

MALICIOUS

PDF

95.9 KB Created: 2021-04-17 21:55:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: f4c03add3bd229b4fcf0f0dc449a6b05 SHA-1: b42bb5a8bba1c37f28d63287cdf20fd4b35ec05e SHA-256: 9400cb595953f53d7dc5abb376833e82dc6b42da839b82706fde5843ffe795fc
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. Although no scripts were extracted, the presence of a malicious URL within the document body suggests an attempt to trick the user into visiting a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://fokemale.ru/strik?utm_term=how+to+set+the+knobs+on+a+cobra+29+ltd+classic PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4529095/normal_5ff9bd298e591.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/Ljd217t/47089085045.pdfIn PDF document text
    • https://cdn.sqhk.co/zatovafer/gj4hixi/taxi_garage_crazy_cart_battery.pdfIn PDF document text
    • https://cdn.sqhk.co/jovuvufoxet/iijizhj/clicker_heroes_wiki_outsiders.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374700/normal_601f22fa93bba.pdfIn PDF document text
    • https://cdn.sqhk.co/reromiwo/idiKjb3/the_farmstead_of_ringoes_wedding_cost.pdfIn PDF document text
    • https://cdn.sqhk.co/xutazazo/gjgfha7/disney_plus_free_trial_hamilton.pdfIn PDF document text
    • https://cdn.sqhk.co/zimuteraf/pjc8lkN/33181637109.pdfIn PDF document text
    • https://cdn.sqhk.co/kobadaxo/x7hi7jj/cartoon_faces_lock_lockscreens.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/VITghhc/joxub.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418197/normal_6011928624e6f.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/geUhjKE/pdf_to_word_best_converter_online_free.pdfIn PDF document text
    • https://cdn.sqhk.co/gonolesuzam/QAYhgXm/don_t_rush_guys_meme.pdfIn PDF document text
    • http://jofipifemu.medianewsonline.com/questes_comentadas_atos_administrativos.pdfIn PDF document text
    • https://cdn.sqhk.co/xovinexesun/icwzFD0/82074701023.pdfIn PDF document text
    • https://cdn.sqhk.co/kawurefeki/lEghheV/89424387664.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402963/normal_60339ef5d8a3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457861/normal_6040d76feeac2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wazagidonux/vivubejasazimesuvosajorej.pdfIn PDF document text
    • http://namakanexir.atwebpages.com/truman_capote_a_christmas_memory_audio.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/miclassic_bedside_crib_sheets.pdfIn PDF document text
    • http://salajire.onlinewebshop.net/71616151960.pdfIn PDF document text
    • https://s3.amazonaws.com/pujinit/dream_on_aerosmith_song_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/vivab.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001200c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1200C 5572 bytes
SHA-256: a34a632ebc2cf3855cabf80f7868ca7aabe298d2b7545b67e668a7edab806192
font_01_sfnt_off000132fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x132FD 12348 bytes
SHA-256: 4119d48e24b335cd9e11f6bacc6a14a38a6326989e5670e9e5eef983a7ca8d11
font_02_sfnt_off00015cb6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15CB6 16060 bytes
SHA-256: 5b0d2701ab39d2f69c66d7d16c60d8db0b323aa0832947137e757b5401d27330

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