Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fa59327a65df2b9…

MALICIOUS

PDF

81.7 KB Created: 2021-03-17 20:18:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7fa83902d4aa3b4812d7b00818af8685 SHA-1: b26f5f0793593e11e9478298b0474bbbd89a7169 SHA-256: 6fa59327a65df2b9c4b8bb9e7b8f73dfaac4c5b40461bb8df565255559722059
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many pointing to other PDFs, suggesting a link farm or a method to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. The presence of embedded URLs and the PDF_SEO_LINK_FARM heuristic point towards an attempt to trick users into downloading malicious files disguised as legitimate content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://vilenefex.ru/award?keyword=taking+cara+babies+abcs+of+sleep+pdf+download
    • http://tinipen.medianewsonline.com/vikimusag.pdf
    • http://fasekafalig.scienceontheweb.net/disagesidut.pdf
    • http://jirenaxapibetig.scienceontheweb.net/91719412941.pdf
    • http://kogemotuju.getenjoyment.net/army_regulation_headphones_pt_uniform.pdf
    • https://kowexemi.weebly.com/uploads/1/3/1/8/131872048/f892e6fbb580.pdf
    • https://jotovaxawunujej.weebly.com/uploads/1/3/1/8/131856347/1234924.pdf
    • http://pikejofopon.mypressonline.com/how_do_i_know_what_generation_of_echo_dot_i_have.pdf
    • http://miribut.mywebcommunity.org/denon_dcd_685_ebay.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/1e2d58f7-687b-4f3d-bb8b-996e45556a09/kovasisobitoluxex.pdf
    • https://uploads.strikinglycdn.com/files/14a75ec7-d099-4111-a382-26fd06626d65/how_to_pair_my_bose_speaker_to_my_phone.pdf
    • http://xujided.onlinewebshop.net/24907297963.pdf
    • https://uploads.strikinglycdn.com/files/da3e52cf-9635-4de0-a84f-fc4584aa3acf/samsung_m2825dw_wireless_setup_mac.pdf
    • https://uploads.strikinglycdn.com/files/22eac76f-546e-4338-8b97-9a1755c327d4/how_to_change_location_on_dish_network.pdf
    • https://uploads.strikinglycdn.com/files/1348cbe9-06ab-447a-b595-1782a9384ac4/god_of_war_4_novel.pdf
    • http://gemovimuwopete.atwebpages.com/23252532657.pdf
    • https://uploads.strikinglycdn.com/files/1f1b03ac-44a0-4527-aee1-cd573609301e/nuvegejepanunifimitugow.pdf
    • https://uploads.strikinglycdn.com/files/022d898e-a2bf-48e5-bbae-2c00b1e280a6/pluralistic_theory_of_sovereignty_was_developed_by.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001014d.bin
1cfc54319f5c6ce79cff9f08e7e98bc462d4381c5e0a88287b162aeba0adbc63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1014D 5568 bytes
font_01_sfnt_off0001145d.bin
db75fcd865a24e0de852b59eb3d94c45db559e5ae8a37e3e199889de7f024b00		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1145D 10796 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.