Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5b31d531c24a1e5…

MALICIOUS

PDF

76.9 KB Created: 2021-03-14 04:48:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f5af3e63a53ea9b30cac8a9d61da2af6 SHA-1: 9afd3e8173235c7f90d69ae5c1479f453cdd56a3 SHA-256: d5b31d531c24a1e5b49b607fcb477ac71de084a50cf4d6a0f0eb5c7250ccdcb5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://fokemale.ru/strik?utm_term=what+time+do+stock+markets+open+west+coast PDF link annotation
    • https://cdn.sqhk.co/fodexuxefeba/MrgggiH/kubejoboxakifemunedi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374211/normal_6020fdedc1671.pdfIn PDF document text
    • https://cdn.sqhk.co/vaminika/EjhhdxN/kus_z_plama_oyunu.pdfIn PDF document text
    • http://usacarins.com/wuxugitozedes624c6.pdfIn PDF document text
    • http://verifybadgehelp.com/resivaxokijuxupiwj05kn.pdfIn PDF document text
    • https://cdn.sqhk.co/kukisigafumi/aicghij/25308247519.pdfIn PDF document text
    • https://cdn.sqhk.co/nakunadubux/obZjahg/valentine_s_day_dessert_ideas_for_two.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/1gi8Tje/59780251455.pdfIn PDF document text
    • https://cdn.sqhk.co/xavexapoxiv/cRgdLuq/lep_s_world_2_hack_mod_apk.pdfIn PDF document text
    • http://sehq.xyz/how_to_get_crowns_at_burger_king9hpeh.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393359/normal_601f6dbf56187.pdfIn PDF document text
    • https://cdn.sqhk.co/nujorazaje/jdjBiaj/10599140689.pdfIn PDF document text
    • https://cdn.sqhk.co/zojixemem/hc4icij/green_peppercorn_sauce_recipe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470982/normal_602ef09015c3b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/19bec111-8bfc-4b38-aa0e-ffe0d6c8f2f0/93255859352.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/543baec3-eb85-400d-bf97-a776c73711e0/daxakizuxefimabasa.pdfIn PDF document text
    • https://s3.amazonaws.com/xubifupi/gisitutuj.pdfIn PDF document text
    • https://s3.amazonaws.com/wikurixobelu/we_be_all_night_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a98c137-860d-45f7-8332-bb751c19177d/vodavi_starplus_sts_3515-71.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/dolakavekasotejemobu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b16ae9e3-e410-4203-a4a1-71dc61382fef/wilma_rudolph_unlimited_read_aloud.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_off0000eb9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB9B 5452 bytes
SHA-256: 96834f47287a4460ac4fbc9d7c610045b2374d9f8b6f67f51c816b33c0164940
font_01_sfnt_off0000fe10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE10 11240 bytes
SHA-256: 3ab5287a0b02e0ef828360f4e3afd5f19107987aede151280b160cdbd3094f40

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