Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bade19a7ef3fa26…

MALICIOUS

PDF

91.2 KB Created: 2021-03-15 14:19:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 9e2ac9b0f9822d247d3788da1187d4f6 SHA-1: 861ffe50a94fe9580b633040b2edfdd6e7ef6a8a SHA-256: 9bade19a7ef3fa26a3af8e2195e76b60e6a81aeffd345faba2ecb9d19fa3c6f9
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 0.9995

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://druttle.ru/123?utm_term=t%25C3%25A9l%25C3%25A9charger+gratuitement+adkar+sabah+pdf PDF link annotation
    • http://jikusofare.mywebcommunity.org/remington_bolt_action_black_powder_rifle.pdfIn PDF document text
    • https://cdn.sqhk.co/fufowomusixi/aOqgfnM/mi_launcher_apk_xda.pdfIn PDF document text
    • http://nemosixumeki.mypressonline.com/91149570871.pdfIn PDF document text
    • http://cardioactiveufficiale.site/jefemazitowupiboretxx527.pdfIn PDF document text
    • http://lexamopelezun.mywebcommunity.org/why_my_panasonic_tv_keeps_turning_off.pdfIn PDF document text
    • http://eushopvmn.site/grade_10_filipino_module_1_answersfo6ot.pdfIn PDF document text
    • http://duxinivodozular.mywebcommunity.org/1174228921.pdfIn PDF document text
    • http://jorowijedo.mywebcommunity.org/12178514326.pdfIn PDF document text
    • https://cdn.sqhk.co/xibetevoxaj/gja9fYc/45549497102.pdfIn PDF document text
    • http://ilook.market/keto_meal_plan_photosxucjw.pdfIn PDF document text
    • http://kevifiregerufug.scienceontheweb.net/bwv_1013_recorder.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolaseja/GeXUict/85853859903.pdfIn PDF document text
    • http://fullcreditreport.info/suzuki_sidekick_for_sale_coloradoyg835.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/b5812042-187b-4939-8c29-eb3ffcf0620a/salems_lot_1979_full_movie_dvd.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eceff6a3-2cae-418b-85c0-76f12b4ecc96/62509174117.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77e77d5e-87f9-4536-9568-42be4fb42deb/why_is_the_discovery_of_america_so_important.pdfIn PDF document text
    • http://xiniwipilanaju.atwebpages.com/rising_of_the_shield_hero_light_novel_volume_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77d19a5b-8c2f-4476-ab7c-e5c090df1c10/electrical_engineering_technician_jobs_in_new_zealand.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/19822473-2f70-4900-b6a9-4baab5f511bb/visezekagilelepozise.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d7bd322-38c1-4b1e-93ab-4b0c2125c355/neloxinofodamigoveb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfdb6f57-28e7-4157-bd5f-a1887be116fe/1525889706.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25aaefcd-44eb-4bc4-8fc0-1e95d5b237a5/sodastream_source_element_instructions.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00012cbd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x12CBD 26996 bytes
SHA-256: ebe9a3fe9e246f93b0b9165918dadc42d1dd657df50ac5ed7b8d12abc8153408
font_00_sfnt_off0000f4fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4FB 5864 bytes
SHA-256: a24232edf90053fada704d46eaf110dcbbf21e5dd04d933cd9dd7d178a676645
font_01_sfnt_off00010873.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10873 10964 bytes
SHA-256: a951d0880cfac0f03198830ec6d0fe20020a1beaeeddf16b0bf38d15ecc49c41