Malicious PDF — malware analysis report

Static analysis result for SHA-256 dafda142d4a83b7f…

MALICIOUS

PDF

80.9 KB Created: 2021-04-18 16:57:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 69625ac322375fd9d9b5270a651c97a1 SHA-1: 1604254f9eb167143ff72ed913dd71b0271c0f06 SHA-256: dafda142d4a83b7fbadbe1e81d0a027f993af3803907a16b803b666e3523f9f1
156 Risk Score
Tags
free-cdn-ebook-manual-lure

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 0.9998

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.
  • 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://xezojetit.ru/strik?utm_term=how+to+replace+samsung+defrost+sensor PDF link annotation
    • https://cdn.sqhk.co/wemopizajazo/juYiahj/car_lease_calculator_canada_excel.pdfIn PDF document text
    • http://zavutuwifuwe.iblogger.org/indira_awas_online_form_apply.pdfIn PDF document text
    • http://kazaxukiga.getenjoyment.net/what_is_the_difference_between_orthodox_christian_and_baptist.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415537/normal_60689403704d6.pdfIn PDF document text
    • https://cdn.sqhk.co/pibepufas/gfjeduP/lawiledofabof.pdfIn PDF document text
    • http://zinazeripu.22web.org/fejumigavawepereweduje.pdfIn PDF document text
    • https://cdn.sqhk.co/wemowubire/d3havbo/vitamin_c_deficiency.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460709/normal_6001ea90a765c.pdfIn PDF document text
    • https://cdn.sqhk.co/fugovigul/geifIwc/nostalgia_meaning_in_english_with_example.pdfIn PDF document text
    • http://zopokujejisolan.getenjoyment.net/genetica_molecolare_umana_zanichelli.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/verirejon/bootable_windows_8._1_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/fixararololu/gokakagudasurezoderid.pdfIn PDF document text
    • https://s3.amazonaws.com/toliwudalamem/japan_weather_report_today.pdfIn PDF document text
    • http://lepevalir.rf.gd/79934514262.pdfIn PDF document text
    • https://s3.amazonaws.com/gonafoziguwewe/easy_vegan_indian_recipes_for_dinner.pdfIn PDF document text
    • https://85d2c5a2-fc31-4f76-86b4-4ebe2abe2bf4.filesusr.com/ugd/a8cc01_b434c030993c4d5aa3837e4133c8ed6c.pdf?index=trueIn PDF document text
    • http://jokunikef.epizy.com/building_department_form_ba10.pdfIn PDF document text
    • https://76a725e8-946c-4ae9-9249-cda469d35108.filesusr.com/ugd/83c8cc_9b73fe4825564c23b93db4a46908279f.pdf?index=trueIn PDF document text
    • http://nujopeko.epizy.com/adobe_illustrator_tutorial_free.pdfIn PDF document text
    • https://070488ba-e3d9-4c74-834b-445551f5513c.filesusr.com/ugd/fb83f1_e656e54a55734b21a1879b4018c65803.pdf?index=trueIn 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

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_off0000fd74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD74 5528 bytes
SHA-256: 60332298b4a16bff8755aa9ce6a3b159e1d0a95d8489123e80a95f7f7b94618f
font_01_sfnt_off00011037.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11037 10660 bytes
SHA-256: fc3ac705d1297e3077ba31347b34f0c1acc33dd99c810bc0692597fbfe6d749e

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