Malicious PDF — malware analysis report

Static analysis result for SHA-256 1bb13ec8f4dc9151…

MALICIOUS

PDF

75.2 KB Created: 2021-03-02 10:43:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 2b6505d87d341f9fe2da22b8eed6cc24 SHA-1: 4852bc3571cc410336b11b81c0e306434307a5db SHA-256: 1bb13ec8f4dc9151f0485fd5cf15006e1985be9908e8efa75df19a6fd5a0706b
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The embedded URL 'https://resalured.ru/123?utm_term=paintball+pistol+holster' is the primary indicator of a phishing or scam attempt, disguised by the document's purported content. No scripts were extracted, but the PDF structure itself contains the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=paintball+pistol+holster PDF link annotation
    • https://cdn.sqhk.co/lotazoza/8Uhd2hi/waxapivigukuwija.pdfIn PDF document text
    • https://cdn.sqhk.co/kepigofunet/dUggWij/custom_notification_ringtone_android.pdfIn PDF document text
    • https://cdn.sqhk.co/vemoderama/egjC3gc/parkour_games_for_free_online.pdfIn PDF document text
    • http://yourlivehelp.com/womens_roles_in_the_1950s_quizletyoi6j.pdfIn PDF document text
    • http://neuroncraft.online/29952759972kln5y.pdfIn PDF document text
    • https://cdn.sqhk.co/kitaparek/jbhfehg/11935143680.pdfIn PDF document text
    • http://100p-f.ru/how_to_fill_goal_sheet_for_appraisal_in_tcsxtzsi.pdfIn PDF document text
    • http://getcabinets.xyz/tisomovoxox7vatb.pdfIn PDF document text
    • http://dreabling.online/principales_placas_tectonicas_que_afectan_al_continente_americanoo4x3p.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/vaxebisapesi/google_maps_directions_api_android_studio.pdfIn PDF document text
    • https://s3.amazonaws.com/mexavofezoxi/bcbs_medicaid_medication_prior_authorization_form.pdfIn PDF document text
    • http://fonimegalidoxu.epizy.com/what_is_literature_definition_in_english.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/oxford_literary_terms_dictionary.pdfIn PDF document text
    • https://s3.amazonaws.com/loranoduzuja/load_balancer_using_terraform.pdfIn PDF document text
    • https://s3.amazonaws.com/fedure/82520200343.pdfIn PDF document text
    • http://zegaruso.rf.gd/38245071898.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB45 4836 bytes
SHA-256: b6b1ebdbd59be2da76843a3633d79bac4031f8f01886817b0e755c2f749dd44f
font_01_sfnt_off0000eb92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB92 11220 bytes
SHA-256: f189f0b2f344d6bb3ad36ebb89028750f5aa76c1f787e1d03818eb909894faf6
font_02_sfnt_off000111b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B7 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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