Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d5a6ae2daa13934…

MALICIOUS

PDF

78.9 KB Created: 2021-03-29 13:01:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: c7089011c7890857d584e9b15a5f9ce9 SHA-1: b266cb3236bd25f69115d12ada9f5f05e7381e17 SHA-256: 5d5a6ae2daa13934ebff8b443a553de7932ec04f6c048402cd57ee8a8d25fd17
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 0.9993

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://seumenha.ru/wix?keyword=kim+kardashian+hollywood+apk+mod+10.1.1 PDF link annotation
    • http://wigarijagebufuk.iblogger.org/36294126399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487419/normal_60397291a97a1.pdfIn PDF document text
    • http://bupitubegedew.getenjoyment.net/english_worksheet_for_adults.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451954/normal_605dac9b1a3ae.pdfIn PDF document text
    • https://migawonakizize.weebly.com/uploads/1/3/1/6/131637147/nifesivamabi.pdfIn PDF document text
    • http://zutolewe.mywebcommunity.org/ganenukajuz.pdfIn PDF document text
    • https://cdn.sqhk.co/kewudomavave/jasiENT/evolution_board_game_climate_expansion.pdfIn PDF document text
    • http://fakaripeti.xyz/mofafawomotxar1u.pdfIn PDF document text
    • https://jitebemaduk.weebly.com/uploads/1/3/4/6/134692965/sepito.pdfIn PDF document text
    • http://sopugepibimel.mypressonline.com/65713704331.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369329/normal_5fc981a268029.pdfIn PDF document text
    • https://xolijusir.weebly.com/uploads/1/3/4/0/134016651/rakixejezite.pdfIn PDF document text
    • http://uplrezina.site/nikon_speedlight_sb-600_price_in_indialb81u.pdfIn PDF document text
    • https://cdn.sqhk.co/zereseful/eSdjjbV/emergency_dental_care.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxaletadi/ijbhhMI/zufotifadaxavofera.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427267/normal_60289f234dc1d.pdfIn PDF document text
    • http://pemufosapakem.mypressonline.com/1956903762.pdfIn PDF document text
    • https://cdn.sqhk.co/wenegifuteg/ifgjbgc/zarchiver_apk_download_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/xuvisisitinu/ahhfhbn/kimifidoba.pdfIn PDF document text
    • http://tevfikyuce.xyz/xevogusutebeta2m08.pdfIn PDF document text
    • http://reduslim-shop.website/fepajiwoligbtz5q.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rawelusovonifax.epizy.com/tiptoe_through_the_tulips_piano.pdfIn PDF document text
    • http://rajixubododafu.epizy.com/nj_driving_test_questions_and_answers_free.pdfIn PDF document text
    • http://guziruxasa.epizy.com/dudufazedalakasamakikuj.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_off0000f261.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF261 5652 bytes
SHA-256: 6668d4694a41b3fbb58afaaf7540ec0fbaa68a6beae531a93c52f3ae7a6bcc7d
font_01_sfnt_off00010585.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10585 12060 bytes
SHA-256: d7d6dc50fcf3c853197cb9d394339fbcdf4f3b58c106f2764106ace9c575dee9

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