Malicious PDF — malware analysis report

Static analysis result for SHA-256 00d20099ec3faf4b…

MALICIOUS

PDF

90.2 KB Created: 2021-03-28 04:15:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 2f6dbc4e3157d4b246d57738666408fd SHA-1: 9e42b91f3f5b0b3e8b98fb79e5e57a93bc18c65e SHA-256: 00d20099ec3faf4b0d1811e387d5616e5e33ad7d918bf7b23f5aae123f460edc
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://resalured.ru/123?utm_term=amar+singh+thapa+pdf PDF link annotation
    • http://fajiriduxir.medianewsonline.com/78015135289.pdfIn PDF document text
    • http://polikarmonolit.ru/tufotopozenaberinajopemidu3l11.pdfIn PDF document text
    • http://getporte.xyz/bersa_thunder_380_cc_pinky_extensiongvhvf.pdfIn PDF document text
    • http://lnstagramverifiedbadge-media.com/5319620109976ofu.pdfIn PDF document text
    • http://varistop.site/63283594932atkan.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413362/normal_5fe9947880e2d.pdfIn PDF document text
    • http://balegetiwep.mywebcommunity.org/xanulefaxojomalejosu.pdfIn PDF document text
    • http://prodson.space/a_practical_handbook_for_the_actor_free_downloadphqj5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478430/normal_5fd77914dfad4.pdfIn PDF document text
    • http://biwedujurar.mywebcommunity.org/hebrew_bible_old_testament_the_history_of_its_interpretation.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481684/normal_5fd67fb5c5caf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462093/normal_5fd79487610f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473384/normal_602d439d34e8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369498/normal_6041619d09c74.pdfIn PDF document text
    • http://zoxuruje.sportsontheweb.net/how_to_ground_balance_a_garrett_ace_400.pdfIn PDF document text
    • http://gimakelodikovij.iblogger.org/glitter_images_free.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • http://zijurape.atwebpages.com/40019566517.pdfIn PDF document text
    • http://kakigonameta.epizy.com/bafang_250w_review.pdfIn PDF document text
    • http://mowelafawugek.epizy.com/vidax.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f738.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF738 5948 bytes
SHA-256: 804db97a6f3e7de20e20551709ed4cfb6d8789de1425475e78b4cbc32a746b34
font_01_sfnt_off00010b43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B43 5412 bytes
SHA-256: 0a698213e06d4b679b17b587ea724aef3fbd4e65073a81b5c8345e0e195833b4
font_02_sfnt_off00011d7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7F 11124 bytes
SHA-256: f5fbe4dc314ee65c94d5edef90699efdf4329a04e1c4ac558400b8ac91a2eaf1
font_03_sfnt_off00014310.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14310 6964 bytes
SHA-256: f27593626534331aca863a866d2a3ec31a0c17af738c124fcacafb0d2f1283f3

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