Malicious PDF — malware analysis report

Static analysis result for SHA-256 8314ed412273e491…

MALICIOUS

PDF

73.5 KB Created: 2021-02-17 11:43:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 35032edcf8d9dc1dce98ff5293d80da5 SHA-1: 274d0f3d74943dc205a7e8c41a05c73809588025 SHA-256: 8314ed412273e49147f223a90a8066814286eb232aaf9c3c7aa5e0b90c921985
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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://baarspo.ru/wix?keyword=declaration+of+trust+vs+trust+document PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4450728/normal_60256d21dd0e5.pdfIn PDF document text
    • http://dimax-matrasy.ru/keguwuxapafid9i65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480414/normal_601005daab3cf.pdfIn PDF document text
    • http://lnstagram-help-businesss.com/sC4B1vC4B1larC4B1n_basC4B1nC3A7_kuvveti7oyob.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467300/normal_5ffbef01c00dd.pdfIn PDF document text
    • https://cdn.sqhk.co/jedelamodafa/hjigic2/bounce_houses_for_rent_in_fresno.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405184/normal_5fd8a1cbbe1f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365620/normal_601fafa5b53c1.pdfIn PDF document text
    • http://winoorama.space/how_to_make_price_comparison_in_excelds26t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488103/normal_5fc7342747383.pdfIn PDF document text
    • http://xafegadixugu.iblogger.org/osx_keyboard_shortcuts_cheat_sheet.pdfIn PDF document text
    • https://cdn.sqhk.co/tozegatopaxu/jdujhgf/pictoword_level_488_answer.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4476564/normal_601e3f8114c3f.pdfIn PDF document text
    • http://5coupon.info/thiwanka_dilshan_new_song_audio80v25.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470683/normal_60201bd71c1bc.pdfIn PDF document text
    • http://vuxokiwi.22web.org/belt_friction_experiment_report.pdfIn PDF document text
    • http://penoligis.22web.org/beta_hcg_test_report_format.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421468/normal_6008e3c5044ad.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tafikepuvanotu.epizy.com/mitugidod.pdfIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/27709853631.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_off0000e383.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE383 5224 bytes
SHA-256: 8f4be72bfe8b012e3f362f151a5d4d589f2d0171d1e79655f07d0c96365e964d
font_01_sfnt_off0000f543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF543 10440 bytes
SHA-256: e6681f018371b4e98297698a987a6e23bb71e8c22ef85adf758b739af5f50fe4

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