Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e6ea253657ecad3…

MALICIOUS

PDF

78.8 KB Created: 2021-03-14 11:41:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6904339dba07cbf5eba4daeed984af51 SHA-1: 87f33b2d26221f49f5bf792a03ef1483b2b9dc68 SHA-256: 2e6ea253657ecad308cbfb67de66d8ac3f64f0503ba84dc37c1797a97c7baa97
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://soxebez.ru/wix?keyword=oracion+de+la+ma%25C3%25B1ana+de+hoy PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4467286/normal_6029d5c119521.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461761/normal_5fe608de8622e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454301/normal_60294671f2cab.pdfIn PDF document text
    • http://tuwasukam.getenjoyment.net/5581642882.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453560/normal_5fcf9ebc9b4f4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481990/normal_5ff08c648ea33.pdfIn PDF document text
    • http://zufemefuzubaje.iblogger.org/98120020642.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495681/normal_5ff60e0e7e09d.pdfIn PDF document text
    • http://nesebonuvobeju.getenjoyment.net/what_are_the_cube_numbers_from_1_to_1000.pdfIn PDF document text
    • https://cdn.sqhk.co/tavanaru/h2p5hcu/wallpaper_hd_iphone_7_red.pdfIn PDF document text
    • https://cdn.sqhk.co/zapimafe/ebH69TH/70870519260.pdfIn PDF document text
    • https://cdn.sqhk.co/bitizulokiva/haghPSk/star_wars_timeline_canon_movies.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448724/normal_5fe505a2c156b.pdfIn PDF document text
    • https://cdn.sqhk.co/nasanoroge/ohc2icc/samsung_clp-_310n_printer.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://panexorumilogim.myartsonline.com/93277267155.pdfIn PDF document text
    • http://kojusefum.rf.gd/three_purposes_for_writing_the_declaration_of_independence.pdfIn PDF document text
    • http://rolewafofe.epizy.com/93217382491.pdfIn PDF document text
    • http://jelunegizubu.atwebpages.com/toxoplasma_diagnosis.pdfIn PDF document text
    • http://pibusobi.epizy.com/majoragaranunirujoduz.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/41911551526.pdfIn PDF document text
    • http://mobosefevexaxep.rf.gd/present_simple_passive_exercises_multiple_choice.pdfIn PDF document text
    • http://rigidafavubo.myartsonline.com/sabovivevizebufojironozu.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_off0000f4d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4D9 5340 bytes
SHA-256: 8e768a06193c5e819669660bd369423c791261c1dff6ec9deb13186b9ce15de5
font_01_sfnt_off00010690.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10690 11524 bytes
SHA-256: 0dcb1b1c9c75d6fd31efa9640945e64d59b4fce35cdb7de636fe8a4ead3f5fb6

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