Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f027f70338a3277…

MALICIOUS

PDF

80.4 KB Created: 2021-03-14 15:31:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 747722266a712e4a507bb78fc3d9440c SHA-1: 204d2464d0ef5362cabd9a98bde56ede1c2fa760 SHA-256: 7f027f70338a3277ef0875cc1da6eed7d4bfa8d772c38901a35fbfbe749ed98c
126 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://resalured.ru/wix?keyword=finding+complex+zeros+of+polynomials+worksheet PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4459939/normal_60273df93a8b2.pdfIn PDF document text
    • http://lebojabufi.medianewsonline.com/3724474502.pdfIn PDF document text
    • http://rekugegik.scienceontheweb.net/49055796503.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403260/normal_601c71774fdd9.pdfIn PDF document text
    • http://chambrely.xyz/how_to_set_time_limits_on_kindle_firepksbs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379974/normal_5fe696d61a45c.pdfIn PDF document text
    • http://wejuveziwep.mypressonline.com/bojujes.pdfIn PDF document text
    • http://consumer-data-protection-bureau.com/dimajijebisqjylo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489264/normal_5fe7bc7c75a45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403408/normal_5fcf4d6adcb36.pdfIn PDF document text
    • http://xolokukifimiv.sportsontheweb.net/dd_unearthed_arcana_spells.pdfIn PDF document text
    • http://creditreportusa.info/oster_kitchen_center_mixing_bowlshcalt.pdfIn PDF document text
    • http://pushbiz.fun/zubedaprhmn2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410965/normal_5fe9788188eff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417426/normal_5fef7b2429102.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460473/normal_60415a483a6a5.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/disney_world_attraction_refurbishment_schedule.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://siniligavaxuvul.onlinewebshop.net/1996_chevy_blazer_wiring_diagram.pdfIn PDF document text
    • http://lusajafimaneru.myartsonline.com/41424509105.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7B1 8204 bytes
SHA-256: 5709c8637b314c6cfc14b3d5d0a85536103fab763fb2e4ada1a55559706524db
font_01_sfnt_off0000ed54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED54 3076 bytes
SHA-256: f1390c4519a1ea52eeed6b2ce278931289fb74b60a5ec4763aa2af2d78984ef6
font_02_sfnt_off0000fa3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA3C 5900 bytes
SHA-256: b5580944e06aea5442dab06f006e0e33f4f4df2f3c5ca67eb501609389e42f8c
font_03_sfnt_off00010e59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E59 10576 bytes
SHA-256: 51a25fda568249ee452d8f321cbf7cc995558624d0ff6ed595b8cc27f6e13bd5

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