Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8b4e41e7b981859…

MALICIOUS

PDF

81.3 KB Created: 2021-03-22 07:29:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c638bc6e651a29df2576102acd6740d5 SHA-1: b5453700c4c6c60b2070913282aae55c86fda5ef SHA-256: b8b4e41e7b981859d44d4d8269912a98211e40d0caca17f0e9343067dcd6d361
96 Risk Score

Malware Insights

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

The PDF file contains numerous embedded URLs, one of which is directly referenced in the document's metadata. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The presence of multiple external links suggests an attempt to redirect the user to malicious sites or download further payloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://druttle.ru/wix?keyword=ffa+fruit+sales+brochure+2019+kansas
    • http://tipofeliluget.medianewsonline.com/pokavib.pdf
    • https://cdn.sqhk.co/wowasuperan/Xjd0Hje/student_work_experience_report_example.pdf
    • https://tunutepefa.weebly.com/uploads/1/3/1/4/131453603/memujanojozede-jatujejojoniral-pifobimomo.pdf
    • http://pemufosapakem.mypressonline.com/cuisinart_keurig_troubleshooting_descale.pdf
    • http://zuxekagapefe.mygamesonline.org/algebraic_expressions_test_grade_7.pdf
    • https://cdn.sqhk.co/vagekasip/aphhshi/pixel_blade_m_vip_action_rpg_apk.pdf
    • http://galufixagomedo.getenjoyment.net/aomais_sport_ii_manual.pdf
    • http://invitesistem.ru/what_is_prehistoric_art_brainlyxxkvp.pdf
    • http://toworugesolur.getenjoyment.net/kasasugexuvenotutinadax.pdf
    • http://remont-kvartir-otzyvy.moscow/cisco_wrt160n_specstpyq5.pdf
    • http://fuvesozufinefi.medianewsonline.com/67253589567.pdf
    • https://cdn.sqhk.co/bedogipaxog/YmSugdY/harvest_tyme_christmas_lights.pdf
    • http://zanovekolasin.mywebcommunity.org/budgeting_and_financial_management_for_nonprofit_organizations.pdf
    • http://xawamiwupajev.mygamesonline.org/avaya_2420_digital_telephone.pdf
    • https://gawujura.weebly.com/uploads/1/3/5/3/135325150/79b4b86ef9.pdf
    • https://pelefazefipaguj.weebly.com/uploads/1/3/4/8/134892892/5482143.pdf
    • http://salearea.pro/256441026409a7q5.pdf
    • https://cdn.sqhk.co/pulurune/Hxgigi8/city_coin_laundry_liberty_tx.pdf
    • http://lebizifijafaxim.medianewsonline.com/hp_officejet_pro_8615_e-all-in-one_printer.pdf
    • https://zegazofegu.weebly.com/uploads/1/3/5/2/135296009/b6a54.pdf
    • http://tometifo.getenjoyment.net/pexabewudedoz.pdf
    • http://fefiwizam.sportsontheweb.net/conducting_research_in_psychology_measuring_the_weight_of_smoke.pdf
    • https://cdn.sqhk.co/kagelemovo/hpichhJ/pusosabojidud.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • 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_off0000ff34.bin
0a087df4c99f596b4bb1920d41a4de221695730f213485db7a7531c07d91181f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF34 5608 bytes
font_01_sfnt_off00011245.bin
0f764cb699f7987dd48fd12d8dc0bbfb7bed6cb6535b59c9c5b215dc1ffd3e56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11245 11020 bytes

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