Malicious PDF — malware analysis report

Static analysis result for SHA-256 06ebeefe7ccfb0c9…

MALICIOUS

PDF

93.3 KB Created: 2021-03-22 16:36:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 18f97dfef9726e568b8705c59aa14f3c SHA-1: 76642b322f3700f0070a9d21b84f36e5f2884481 SHA-256: 06ebeefe7ccfb0c99bbdc468bc000e8cff37f71a42197f96392ca0af96048fa4
186 Risk Score

Malware Insights

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

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 0.9911

Heuristics 6

  • 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.
  • 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://mezovuduw.ru/wix?keyword=descargar+pelicula+el+diario+de+una+ninf%25C3%25B3mana+en+espa%25C3%25B1ol+latino PDF link annotation
    • http://agent-spv.space/kanpur_university_ma_exam_date_sheet_2019q1zo7.pdfIn PDF document text
    • http://my-favshopf.online/dark_tower_series_in_reading_orderz15yk.pdfIn PDF document text
    • http://baffer-shop.space/belenajazixenenijomuvju8gj.pdfIn PDF document text
    • http://housefashion.ru/zoxunikodexunedeginosiz1g8h.pdfIn PDF document text
    • http://ionatr.fun/mivopuvezl0pip.pdfIn PDF document text
    • http://nurokojo.mypressonline.com/fabasonupulavinipab.pdfIn PDF document text
    • http://dosijefa.mypressonline.com/nopoxajumavojesubij.pdfIn PDF document text
    • http://poroda.site/nakokikejodejufafaxugelab18f.pdfIn PDF document text
    • http://reduslimitalia-official.site/subway_nutrition_calories_ukamgb5.pdfIn PDF document text
    • http://help-copyrighteamservice.com/130183682285bmof.pdfIn PDF document text
    • http://ifeelgood.club/durability_of_concrete_structures_reportdh2kc.pdfIn PDF document text
    • http://4338bacchus.com/crc_card_templatehanji.pdfIn PDF document text
    • http://tuwasukam.getenjoyment.net/hip_flexor_strain_rehab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://901c4554-6fda-40bf-8344-1f1538f5dc06.filesusr.com/ugd/a76634_30aff3ed3f504bb3b445221834f59b55.pdf?index=trueIn PDF document text
    • https://e02212b7-c8ec-4bf5-ba3e-d68a1de675e0.filesusr.com/ugd/7f1d73_a302c2d5011b4a8f91127bf7e3464a8f.pdf?index=trueIn PDF document text
    • https://181f3bdf-810f-4c34-abb3-9f3362228cd6.filesusr.com/ugd/30415f_684921f3c824419fafa9c565d1cc2fcb.pdf?index=trueIn PDF document text
    • https://8641c524-1fb5-4292-87ed-dd72f64d6c22.filesusr.com/ugd/9b7d8a_26a10ac74f3b49a28becd8b7baae8bbd.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbcd689b-c907-49f5-a310-1b5a3ef94683/bijupa.pdfIn PDF document text
    • https://4adff18d-dc39-4349-be2c-eeb12737f1cb.filesusr.com/ugd/9117e0_923be8155bef4eca9d9721ff695aa5f3.pdf?index=trueIn PDF document text
    • https://8b7199fc-a029-4910-8138-caee300d1cbd.filesusr.com/ugd/da8f68_9b68d7880e534c6480c11a98b19e027b.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/daac5e48-663e-4952-aba6-fa560531f3d4/what_does_it_mean_when_your_heater_says_e1.pdfIn PDF document text
    • http://nununad.myartsonline.com/stock_market_trading_hours_day_after_thanksgiving.pdfIn PDF document text
    • https://ececae0b-1312-4a4c-959a-117928b3d478.filesusr.com/ugd/e6721e_89c9a599c7014a238b2eb811ffdce23d.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/d693bc47-2158-410b-a696-3260295fbceb/what_to_do_when_nothing_is_going_right_in_life.pdfIn PDF document text
    • https://fb7bf4c5-056f-4058-a7d1-073478569b53.filesusr.com/ugd/d90490_ac47fc86d1694c7c964fead244f56400.pdf?index=trueIn PDF document text
    • https://30c74dc1-c3f2-4e71-8253-1ec84f3b94e1.filesusr.com/ugd/b8c6fa_b0177504842a4d839f08e294352251e9.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fa65387-173a-4692-8e31-7f4596394d20/what_does_the_radiative_zone_do.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010aea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10AEA 5824 bytes
SHA-256: 976604ddc3bfd6d9923046a1ac9ad0d48dce4332e9ab2a972618196611914554
font_01_sfnt_off00011e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E26 1716 bytes
SHA-256: 92e6c69dec80f6bd842af83c0dd1893a5d8d58c8a2087a86daf2926ab5267b0d
font_02_sfnt_off000126b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126B2 12300 bytes
SHA-256: a9f424a7bcce858d6a0fcb5ff5f1939d130c4e72c08bfb930f961db975bbfa2d
font_03_sfnt_off00014dc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14DC7 16192 bytes
SHA-256: 782e38977b7d7b48822e4e80b1c2a4f5990fa8b32ca6fb88e147c181cf684755