Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c0e81aa8fea5e4…

MALICIOUS

PDF

74.7 KB Created: 2021-05-20 15:02:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 22e36e39ca3577491af94c7ab2023171 SHA-1: 65a984191863ca52f34a701a883f353c7a51fc13 SHA-256: 15c0e81aa8fea5e4ea3b8abfe24106d59e647f4e96ef0d572ea2accb20898717
156 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_SEO_LINK_FARM, indicating it is part of a link farm designed to drive traffic to other sites. The embedded URL points to a domain that is likely malicious, and ClamAV detection confirms the presence of phishing and trojan elements. The document body, though heavily obfuscated, contains references to 'drone robot car game mod apk download', suggesting a lure for potentially malicious software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lozipotod.ru/strik?utm_term=drone+robot+car+game+mod+apk+download PDF link annotation
    • https://nevajuto.weebly.com/uploads/1/3/2/6/132695651/fipibanejapi_molefosibu_luzizine_jipepami.pdfIn PDF document text
    • https://katodelof.weebly.com/uploads/1/3/6/0/136051175/4118f0b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471703/normal_60287faa9ca3b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4504568/normal_60150a3b8313f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369499/normal_6000edc350213.pdfIn PDF document text
    • https://rekizutor.weebly.com/uploads/1/3/0/9/130969391/40361.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/gurafoga/free_coin_games.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b02de38b-9339-43eb-a8a1-0b7ff62bb718/reality_transurfing_1_the_space_of_variations_by_vadim_zeland.pdfIn PDF document text
    • https://s3.amazonaws.com/firigugixujotov/87990165501.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/nefevebexiwin.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/wowuwozegopolul.pdfIn PDF document text
    • https://s3.amazonaws.com/woxorojero/fetiniwevixe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6b614e3c-28a9-4c3e-b0f6-20798610c132/88802653973.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d23f0048-a273-4c58-8bde-b7beccfb3a05/goziw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e465bbc5-0c86-4bf6-be33-23fb1eb53cd2/foxobexowatugilixubilu.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/standard_thickness_of_car_sheet_metal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a347ac3c-f2d7-497b-b38f-92186f544c9d/94895309701.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd627bbd-d648-4641-83b4-a896b7641924/givinizoxotekejurekewenu.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/hayward_h400_pool_heater_propane.pdfIn PDF document text
    • https://s3.amazonaws.com/sukedil/79888907051.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b53d517-f965-4532-811d-cc73ef877d11/lectoescritura_para_primer_grado.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/free_casual_games_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/02db9ad7-1621-482c-9edc-a68ec69ba74e/76269661234.pdfIn PDF document text
    • https://s3.amazonaws.com/forupokisip/can_you_put_any_e_liquid_in_a_vape.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_off0000e62e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE62E 5508 bytes
SHA-256: 1acd015a4d7bcc9927d002b2533ccb3e04244f92e0b7b3a78f75b287c542dd3a
font_01_sfnt_off0000f8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EB 10688 bytes
SHA-256: 983cbbbd729f833f9d15077b8bb2dd54d5419ff1d287c9a47c8aa2d505b33fc6