Malicious PDF — malware analysis report

Static analysis result for SHA-256 d618e9ccbb4a655f…

MALICIOUS

PDF

93.1 KB Created: 2021-04-14 02:48:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: de579cbf92adb396a185be1b2f397fbc SHA-1: df4719f6acb18b84c1d9a68c427bd1193af1e94d SHA-256: d618e9ccbb4a655f1f63a70ae73723529770a7bd7969d3a83de6f14a523bcd45
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://golowaki.ru/strik?utm_term=what+is+the+summary+of+the+story+to+build+a+fire PDF link annotation
    • https://gazobibulome.weebly.com/uploads/1/3/4/7/134775133/d49bc0.pdfIn PDF document text
    • https://cdn.sqhk.co/takakakod/eigbhbS/rest_api_documentation_template_excel.pdfIn PDF document text
    • https://cdn.sqhk.co/zimopaji/dhff3gj/stock_market_simulator_game_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/mofinopedas/ihhnUjy/11352811617.pdfIn PDF document text
    • http://rameautbxy.space/531740096896il1v.pdfIn PDF document text
    • http://alex-chekalev.com/97796596354izkj6.pdfIn PDF document text
    • https://sexuviruzimi.weebly.com/uploads/1/3/2/8/132814305/gutewomuxaf-fozoboro.pdfIn PDF document text
    • http://espaceabonne.com/75369676611wau0w.pdfIn PDF document text
    • http://liketime.fun/kafubodadoxorovaluki7hdwy.pdfIn PDF document text
    • http://just-gopro.com/92843562792ge1vz.pdfIn PDF document text
    • https://cdn.sqhk.co/rizijuwet/jYFgcha/lufifebiwajulawulutoxal.pdfIn PDF document text
    • https://timifuxi.weebly.com/uploads/1/3/4/6/134676324/vutimafez-fibetido-xiwolapa.pdfIn PDF document text
    • https://cdn.sqhk.co/teduwugevoki/ie2gAjh/formula_car_robot_transform_flying_dragon_robot.pdfIn PDF document text
    • http://reawont.online/76177007271zhk5h.pdfIn PDF document text
    • http://optarfes.com/gateway_ne56r41u_biosebohz.pdfIn PDF document text
    • http://naturebiolog.space/44128399408w8k1d.pdfIn PDF document text
    • http://lightly.store/67342183023mo32n.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/tigewibejageju/reraruxelipelepab.pdfIn PDF document text
    • https://bb0106b8-f3e0-414b-a873-a0e24df3f2ad.filesusr.com/ugd/b84a33_bbdb4d414d2c408b9181c0bab174deed.pdf?index=trueIn PDF document text
    • https://7fad2989-91b8-457c-89bc-9a0e7aeef19f.filesusr.com/ugd/b03ff3_79ece8516ac042d5a900ed845face34d.pdf?index=trueIn PDF document text
    • https://39ad70c8-6a03-4de2-a89b-b0209cba5754.filesusr.com/ugd/d2759c_13fe4cc492b849a292f3bb292d9d1d24.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/folexapurilowe/putibelisol.pdfIn PDF document text
    • https://s3.amazonaws.com/gozilum/27522148348.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_off00012ee8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12EE8 5404 bytes
SHA-256: 9329a9e60ccfd32fc6933e97001c7f97d50aaea23e8bd3f53d02bfd95bf291d9
font_01_sfnt_off00014129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14129 10860 bytes
SHA-256: a52a22ea0063b687836b4a37e028c9c31e07cb995f298fa7c474e5bbaffe24f1

Open this report in the interactive analyzer, or submit your own file for analysis.