Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa381ed22b6b27b8…

MALICIOUS

PDF

79.2 KB Created: 2021-05-08 03:55:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 5e2a1a9fed783acd6a010a27919bcfb7 SHA-1: 55173dc5d38f65e3e9cf4522e7e3ef0f1bdb4b80 SHA-256: fa381ed22b6b27b8d004104338a262df5a549b95a3856a4cb90a91e46d787358
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://botokaw.ru/strik?utm_term=toshiba+ct-90325+channel+scan PDF link annotation
    • https://cdn.sqhk.co/kugorazig/eRji5qS/reposteria_definicion_segun_autores.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468572/normal_6062917218eff.pdfIn PDF document text
    • https://cdn.sqhk.co/moxinivo/6Ajhig0/78623148420.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383791/normal_5fef3e17e35d9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475716/normal_5ff209d3f3b67.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365607/normal_60465f902262a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420029/normal_603e6b94b938b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488566/normal_60050aab3ea58.pdfIn PDF document text
    • https://cdn.sqhk.co/nilesatu/hbjgGjc/kogebaxanufigijuga.pdfIn PDF document text
    • https://cdn.sqhk.co/kezavilageg/hidYhhh/transferwise_account_number.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421939/normal_6050eeba22814.pdfIn PDF document text
    • https://cdn.sqhk.co/gapebeve/jDhgPC4/papa_s_sushiria_apk_free_for_android.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/0ef2e789-a298-4eac-af37-e0b7d4f151f2/toyota_camry_hybrid_2019_for_sale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2051e0e7-9b4c-4b86-a161-f63ce6e9b81f/wowutanadi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eb151d7-5cf9-48e8-add1-69af2b271dc6/ratuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7ff856dc-0642-4166-8bfd-ed33e5103d7a/what_is_included_in_an_organizational_profile.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6b5529e-0d8b-474f-b56d-d7dde1dba548/misuwevi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/421d8d63-7f87-4f59-b4a2-3ce7b8e63740/vemifasimuguwazej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77815a0a-a468-46ec-835a-a01dc8affd12/43314227314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c9cb278-39cb-4daf-bf03-f275ea81a07f/hisense_40_inch_smart_tv_reviews.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_off0000f79c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF79C 5632 bytes
SHA-256: 444052241b9730204e5b784dc20e88f0a047095f0fbb0945fcb0a84772a4cf3a
font_01_sfnt_off00010abd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ABD 10324 bytes
SHA-256: 9a072ebdbf42df224fcba14b77435a4d3d11be07d2eb0f3deea80c1613e76b81

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