Malicious PDF — malware analysis report

Static analysis result for SHA-256 d902e60639476089…

MALICIOUS

PDF

76.1 KB Created: 2021-06-04 22:55:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e366b35536750e34a83ba5e827a4053a SHA-1: f4540bf2efce83ab1fa4b18980737555c39044bf SHA-256: d902e60639476089d827666f600654d818e741555ceafb695b71a9dcf46f5c37
184 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

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 0.9804

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.
  • 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
  • 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://nomylo.ru/pbw?utm_term=olivier+blanchard+macroeconom%25C3%25ADa+7ma+edici%25C3%25B3n+pdf+descargar PDF link annotation
    • https://nubesojobe.weebly.com/uploads/1/3/1/3/131398221/gares-bubopujatujemo-mogabujegeruje-mopemen.pdfIn PDF document text
    • https://minaraxu.weebly.com/uploads/1/3/4/7/134765114/35838.pdfIn PDF document text
    • https://kufavugozit.weebly.com/uploads/1/3/5/3/135309998/6239944.pdfIn PDF document text
    • https://sexaluweve.weebly.com/uploads/1/3/4/8/134854061/6c4152216c9.pdfIn PDF document text
    • https://fuzujaloxoz.weebly.com/uploads/1/3/4/6/134684853/1264932.pdfIn PDF document text
    • https://sepadobifivak.weebly.com/uploads/1/3/4/6/134612103/4791984.pdfIn PDF document text
    • https://xojolulodi.weebly.com/uploads/1/3/0/9/130969725/2bb1f4b0d0122ff.pdfIn PDF document text
    • https://xamelanaf.weebly.com/uploads/1/3/5/3/135331914/4257242.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370263/normal_6012dda4afd3e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459188/normal_6064c4ede6593.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/53fa9cbe-cda1-4f72-8536-62de6e5ec5e3/chem_51_lab_manual_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6224bd62-35aa-41c2-8ca8-3bc1f4986825/how_to_reset_vizio_tv_with_black_screen.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/deffe697-3e91-4bca-8753-f9141ce085ba/fagexefi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/898f4ea4-7904-427f-9a57-8dee174e81ce/how_to_program_a_digital_tv_converter_box.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/de7dab1b-fb07-4ebe-8a71-785265dd3b52/snow_white_and_the_huntsman_wife.pdfIn PDF document text
    • http://misabovu.pbworks.com/f/argos_catalogue_2020.pdfIn PDF document text
    • http://jajafad.pbworks.com/w/file/fetch/144417279/idle_streamer_mod_apk_ios.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88bb5e18-c56b-4db7-8fc7-7fd9d3aab324/whirlpool_top_load_washer_cycle_times.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/188b3ba4-24b8-47af-a85a-be9ae5da41ae/joguxebufiwuliweninuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/98197ee3-a072-4695-8d09-148e4a857277/nawuw.pdfIn PDF document text
    • http://kunozulig.pbworks.com/f/rapuj.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e98b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE98B 6068 bytes
SHA-256: 6a0cedbe8adba970f01a641ff6d127ba9fd4ca7ca257196112ee25ca631a6583
font_01_sfnt_off0000fdc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDC7 12332 bytes
SHA-256: f411e2cf5f5f2b516698bbf9fff8b54e533e71d919d4703e68949d75e096fb37

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