Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ba8e154bd856b80…

MALICIOUS

PDF

81.5 KB Created: 2021-03-21 09:29:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 13f9b2618980163112753713ee2fc581 SHA-1: b394f6f8baa92dd75d87f213d449e18334dd2a54 SHA-256: 9ba8e154bd856b808dc79a98fba4dbd8123165c0e126fbce9f127fcc22c6dae8
136 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document employs a lure related to 'How to train your dragon homecoming 2020' and contains an embedded URI that redirects to a phishing site. The primary attack vector appears to be a phishing lure designed to entice users to download and interact with malicious content.

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://xajibur.ru/strik?utm_term=how+to+train+your+dragon+homecoming+2020 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4405414/normal_5ffb13b7c7c68.pdfIn PDF document text
    • http://lbaranaydin.com/kohler_jacuzzi_tub_faucet_removaldyepa.pdfIn PDF document text
    • https://cdn.sqhk.co/guwuweri/20hiZih/78856337803.pdfIn PDF document text
    • http://bonusiotsbera.online/molecular_cloning_a_laboratory_manual_fourth_edition_downloady4nec.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446772/normal_5ff13eac435e7.pdfIn PDF document text
    • http://hookup673.site/gexetidutudidajijilivefojju0kp.pdfIn PDF document text
    • http://rentline.pro/the_walking_dead_book_16zncud.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478968/normal_5ffd53c3d27c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428039/normal_5fe223638e8f4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421468/normal_5fe99c891216a.pdfIn PDF document text
    • http://fullpisetc.ru/how_to_get_cosco_high_chair_cover_off6qkdj.pdfIn PDF document text
    • https://cdn.sqhk.co/titesojijuko/ghfCaf1/nujagaliritaserozeruvulod.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486535/normal_5ff650c6546c1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449395/normal_600984fbcd836.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489402/normal_600907c2cb220.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408352/normal_601d007b45603.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4493553/normal_5fdb0897726c3.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/72d216de-e26a-4fd2-82b4-8937420f07d0/77871521389.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf842582-669d-4456-8dbb-0308b9b0cc08/how_to_use_excel_formulas_and_functions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d4e87cc-6daa-4bfe-8f1f-fa188da41066/1637592623.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a0e9db3-2057-470c-a6f2-c003d1c8baeb/basic_linux_commands_list.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e06e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE06E 5572 bytes
SHA-256: bf2c9e7db4c5079f8597783502cd6f119de0df8e5283e67f8431347d4fcd7f08
font_01_sfnt_off0000f350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF350 13452 bytes
SHA-256: e87b235288a5e1a684f81b2905f01102b507d5a08e4f6983715b758edab9c5e0
font_02_sfnt_off00012089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12089 16204 bytes
SHA-256: a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd