Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5241841bc4b0447…

MALICIOUS

PDF

72.9 KB Created: 2021-02-23 20:46:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 41f01590f0d47d1377d97ab747e3200f SHA-1: f40ea05d90d22b40c7d26f7e76d80277b4620fea SHA-256: c5241841bc4b0447525cd76ae3a4afbb26e91628dca321102b0098315d611aa4
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://seumenha.ru/wix?keyword=peoplesoft+accounts+payable+process+flow+chart PDF link annotation
    • http://pro-komp-master.website/gitomufogofeg1gm3.pdfIn PDF document text
    • http://womenita.fun/nikon_n80_priceyb55d.pdfIn PDF document text
    • http://prizinsta24.site/cordless_phone_with_answering_machine_reviewsemzbt.pdfIn PDF document text
    • http://naturebiolog.space/aws_glue_cloudformation_templatewo8qc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496378/normal_5fed500b0c9b1.pdfIn PDF document text
    • http://ashotik.space/51185398225r2lqo.pdfIn PDF document text
    • https://cdn.sqhk.co/fapetemiji/jtggHjh/free_spirit_level_app_for_samsung.pdfIn PDF document text
    • https://nagaxubonafebax.weebly.com/uploads/1/3/1/6/131606673/2929595.pdfIn PDF document text
    • http://datab.vip/between_facts_and_norms_reviewxryi9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482847/normal_5fecb15b18a2b.pdfIn PDF document text
    • http://requiredjokblog.com/the_odyssey_graphic_novelyg3bh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420239/normal_5ffea3ec26b84.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/bidivo/baby_stroller_reviews_consumer_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/concertmaster_solos_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/vefagotoje/php_all_array_functions_with_examples.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e174.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE174 5436 bytes
SHA-256: 67214d2e9fb3c8169d6d95c528f6f31c818ec07525f5762ac099f58fc0dbece9
font_01_sfnt_off0000f3ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3FF 9948 bytes
SHA-256: 7b537698e1e25363e9e7c908faa8c01830b2b59d43962792c58ba4ad8373847d