Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7c662f937e323e9…

MALICIOUS

PDF

76.5 KB Created: 2021-03-18 02:01:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 5a9d86b5404f555a242e38e0ca97d22d SHA-1: 96b3071cf0801da3bc9cb9b5262a771342764d98 SHA-256: c7c662f937e323e9d0e170eaf631a5903be493f7c781083049f0d67d4997df04
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 0.9997

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://soxebez.ru/wix?keyword=the+atmosphere+greenhouse+effect+worksheet+answers PDF link annotation
    • http://sovolox.getenjoyment.net/bls_provider_manual_2020.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410004/normal_6014a5dea3ccb.pdfIn PDF document text
    • http://nosatines.mypressonline.com/rajugegefumep.pdfIn PDF document text
    • http://jijimaxugixu.22web.org/4566947257.pdfIn PDF document text
    • http://joy-todays.online/honda_2000_generator_parts_manualav44a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480580/normal_605285d6a2838.pdfIn PDF document text
    • http://trysucre.pro/wiranovupalawo1l1se.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470524/normal_5ffd835f516c4.pdfIn PDF document text
    • http://reduslim-italiaufficiale.site/anne_klein_sport_nolita_flatform_sandalsj0wx8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423728/normal_60074d6f860e7.pdfIn PDF document text
    • http://sutarakikim.scienceontheweb.net/kisufozepej.pdfIn PDF document text
    • http://leseweremizew.scienceontheweb.net/how_do_i_get_ij_scan_utility.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366004/normal_6003b1aa96479.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453117/normal_60407c1cca842.pdfIn PDF document text
    • http://fesigemujelepir.66ghz.com/facebook_cover_video_template_after_effects.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/viromibukoleliw/championship_manager_01_02_update_2019.pdfIn PDF document text
    • https://s3.amazonaws.com/lanubili/birkenhead_sixth_form_college_open_day.pdfIn PDF document text
    • http://joduwupazo.epizy.com/vifop.pdfIn PDF document text
    • https://s3.amazonaws.com/metakibeme/21113160647.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/damusope.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

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_off0000eddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDDC 5500 bytes
SHA-256: a1b566f404dfb957d1bbd632608b777e3906fe297573909014bf668be0167eb9
font_01_sfnt_off00010082.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10082 10572 bytes
SHA-256: 80bba16f3a4288614e010147630989beadec979d8bb96758fc2f9a9791f48620

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