Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e730220a723f3a…

MALICIOUS

PDF

76.9 KB Created: 2021-02-28 13:23:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d2736c356b2f5f9ad928fdd1def48e5f SHA-1: 802fa9d0e6bae33a594806768ae6f7aec1ea08a6 SHA-256: 30e730220a723f3a6013d5212d1547c24a9c613f24eed631178b5de6b46fc37f
126 Risk Score

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 0.9998

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://crophysi.ru/wix?keyword=analyzing+genetic+data+worksheet+answer+key PDF link annotation
    • http://gosoxegekiri.mywebcommunity.org/legetuj.pdfIn PDF document text
    • https://cdn.sqhk.co/xojelumegasi/elYhigf/926687480.pdfIn PDF document text
    • https://cdn.sqhk.co/pakiwujipubi/ejbhJTT/54537606779.pdfIn PDF document text
    • http://robinmani.site/gusetumolatudanalataponulo5md9.pdfIn PDF document text
    • https://cdn.sqhk.co/kogeledewafo/jcidigi/83566999721.pdfIn PDF document text
    • https://cdn.sqhk.co/maxevurux/RheSKig/wupetizikavaxazopavupago.pdfIn PDF document text
    • http://dosubodanes.mypressonline.com/duraflame_infrared_stove_heater_with_remote_control.pdfIn PDF document text
    • http://copyrighytsupport.com/lifejiwijemebuxepaxil3jmy.pdfIn PDF document text
    • http://fejukoturig.medianewsonline.com/easy_tammara_webber.pdfIn PDF document text
    • http://jojidasusesot.sportsontheweb.net/bativerofazakapevaxegu.pdfIn PDF document text
    • http://deemonatrafik.xyz/78623792706n2thn.pdfIn PDF document text
    • https://cdn.sqhk.co/sunomedude/jc4jbha/block_craft_3d_free_download_apk.pdfIn PDF document text
    • http://jofufunobek.sportsontheweb.net/55115766463.pdfIn PDF document text
    • http://gratoraama.space/algebra_1_regents_study_guidevw7y9.pdfIn PDF document text
    • http://ligugiban.scienceontheweb.net/sony_str-dn850_test.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/nhcha2l/spaceflight_simulator_mods.pdfIn PDF document text
    • http://dawexefif.getenjoyment.net/does_walgreens_sell_jumper_cables.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://perexuwofogefo.onlinewebshop.net/jadiloze.pdfIn PDF document text
    • https://s3.amazonaws.com/neporezofov/1813087732.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_off0000ed69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED69 5500 bytes
SHA-256: 904a6a43bd85d3037e7d7909defff550973a5839ab30bd3c62a475654ef78f15
font_01_sfnt_off0001003a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1003A 11244 bytes
SHA-256: 09faf4508b0223c84a78f67f08636c623c0754cee62eaad423ec4be48448a052

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