Malicious PDF — malware analysis report

Static analysis result for SHA-256 49eda4d58e7663c5…

MALICIOUS

PDF

79.2 KB Created: 2021-04-03 15:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: cc52a97461dd701ed4cde3e0138cada9 SHA-1: 843afc783cc0dcee28902ad950590fc4c266cfe4 SHA-256: 49eda4d58e7663c587cd2b48585833ed94b132c83e3a7c74d70a9c57b937b5af
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 0.9996

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://mezovuduw.ru/wix?keyword=common+security+interview+questions PDF link annotation
    • http://ig-copyrighthelpcenter.com/formato_bienes_y_rentas_2020u15ps.pdfIn PDF document text
    • http://copriyghtconfirmed.com/fikivadivoloxulevazurovjpbsy.pdfIn PDF document text
    • http://judupebe.getenjoyment.net/58982526928.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390366/normal_5ff287ffa6d50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490364/normal_6000611aa0c75.pdfIn PDF document text
    • http://stingeksoj.online/tobujegikowijemer9b0f1.pdfIn PDF document text
    • http://nejozewowedona.22web.org/insert_a_worksheet_in_excel_2010.pdfIn PDF document text
    • http://tozofuji.scienceontheweb.net/how_to_draw_the_loomis_head.pdfIn PDF document text
    • http://jeruwit.mygamesonline.org/formation_catia_v5_surfacique.pdfIn PDF document text
    • http://fomoregekamikat.mypressonline.com/ropixeguzanubovuzesiwofex.pdfIn PDF document text
    • https://malitorenifavo.weebly.com/uploads/1/3/4/0/134017021/woxiniriken.pdfIn PDF document text
    • http://jonotijero.medianewsonline.com/atls_abcde_del_trauma.pdfIn PDF document text
    • https://bapudemajupi.weebly.com/uploads/1/3/1/4/131438294/333ef3dbef99d0.pdfIn PDF document text
    • http://xamawigokoke.mygamesonline.org/how_many_calories_does_a_piece_of_corn_on_the_cob_have.pdfIn PDF document text
    • http://arm-watch3.club/introduccion_al_derecho_marco_gerardo_monroy_cabra_gratisnwtlk.pdfIn PDF document text
    • http://lbaranaydin.com/my_talking_tom_vs_tiger_shroffchwc2.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zetakid.rf.gd/89267975288.pdfIn PDF document text
    • http://xanomake.epizy.com/westinghouse_3-outlet_outdoor_heavy_duty_digital_photocell_timer_instructions.pdfIn PDF document text
    • http://kofikirigor.rf.gd/ronuxi.pdfIn PDF document text
    • http://kapirexazi.onlinewebshop.net/17328561508.pdfIn PDF document text
    • http://wugetad.myartsonline.com/71874017449.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_off0000f8eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8EB 4988 bytes
SHA-256: 5b62f5f3495ff4beccebc610d17f2d769c9f6c7451325f958095d27c7b21f2e8
font_01_sfnt_off000109ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109EC 10916 bytes
SHA-256: 5fa8c4164be422039755fda785e0a22f53269974ded8dba3295262526f3821f9

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