Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c5c0f330cdd6393…

MALICIOUS

PDF

78.1 KB Created: 2021-03-25 05:52:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d5c8df736bd6e633bf8d3f8038146aeb SHA-1: 61dc883ea5146f225da60fbb4bab03e92ccf602f SHA-256: 0c5c0f330cdd63937f6a3e627ae455664a1215e36eb9207af1c7f9d952dc038e
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as a phishing trojan and a machine learning classifier indicated a high probability of maliciousness. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to 'The Conjuring 3 parents guide' and 'wkhtmltopdf', suggesting a lure to trick users into downloading or visiting a malicious resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://resalured.ru/wix?keyword=the+conjuring+3+parents+guide
    • https://cdn.sqhk.co/xibidodoko/AigdihO/myths_and_monsters_little_alchemy_2_cheats.pdf
    • https://cdn.sqhk.co/foropogajag/gpu1UIh/jeluzolumananepezojokolu.pdf
    • https://cdn.sqhk.co/deloreba/eXgwVAC/piggly_wiggly_juneau_store_hours.pdf
    • http://zuzatew.medianewsonline.com/ct_scan_brain_tumor.pdf
    • https://cdn.sqhk.co/datawafag/iejthdG/39949084011.pdf
    • http://lovupijuti.getenjoyment.net/the_lively_art_of_writing_ebook.pdf
    • https://cdn.sqhk.co/jekenilegefe/Tiegcig/23414474650.pdf
    • http://rujurag.22web.org/xotifuforagivegiliroju.pdf
    • https://cdn.sqhk.co/poluxofad/frxVLjd/86498629112.pdf
    • https://cdn.sqhk.co/narulaloro/IgeL9he/lutoj.pdf
    • http://rikafitamedad.medianewsonline.com/48979402686.pdf
    • https://cdn.sqhk.co/gefimiwotux/oChjhe4/free_movies_2019_app_ps4.pdf
    • http://wititabeg.22web.org/rezojokedeviwebaso.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/luropi/58642232453.pdf
    • http://nedizilunok.myartsonline.com/descargar_la_biblia_reina_valera_en_audio_gratis_en_espaol.pdf
    • https://s3.amazonaws.com/zazelujeju/tax_agent_authorisation_form.pdf
    • https://s3.amazonaws.com/juvuraguvutoxif/bloodborne_official_artworks_paperback.pdf
    • https://s3.amazonaws.com/somamere/discussion_board_posting_guidelines.pdf
    • https://s3.amazonaws.com/patilawasu/who_is_the_head_of_service_canada.pdf
    • http://kubenusuwixop.rf.gd/arabic_alphabet_colouring.pdf
    • https://s3.amazonaws.com/jeworurowam/backyard_baseball_free.pdf
    • https://s3.amazonaws.com/jofunozuzof/jaipur_national_university_mba_finance_assignments_answers.pdf
    • https://s3.amazonaws.com/davolazupivowi/quiero_estar_senor_en_tu_presencia_acordes.pdf
    • 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_off0000f2eb.bin
eea0353f6abc93bc37c861aa77544a9f89fafbc38c5789dd44c0b8d2d45ee3c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF2EB 5492 bytes
font_01_sfnt_off00010596.bin
235127978a40edd33f8aac6638ca5480f0913236a91a833568b7e3297ba74e38		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10596 11080 bytes

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