Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ab1fee234dd970d…

MALICIOUS

PDF

74.5 KB Created: 2021-03-15 07:58:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 236a999388e6b95c3b00852f6c8aae69 SHA-1: 630d393f57cc019ce64f95bf2907b8213f78731b SHA-256: 4ab1fee234dd970ddc2f3785e401a21b89b91801c21a36a43eaaf4e8c428a528
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'resalured.ru', which is a strong indicator of a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/wix?keyword=pacific+tugboat+service+jobs
    • http://gosoxegekiri.mywebcommunity.org/modo_de_produccin_de_la_comunidad_primitiva.pdf
    • http://avit0.cc/kittitas_county_fair_exhibitors_guidei3gdd.pdf
    • https://cdn.sqhk.co/fofodafexadu/2gJ0MTT/22657255527.pdf
    • https://cdn-cms.f-static.net/uploads/4469351/normal_600c28ddbd363.pdf
    • http://fumatiw.mypressonline.com/temupinokire.pdf
    • https://cdn.sqhk.co/zolaxadivowe/jNiezrl/bigulepemubafojup.pdf
    • https://cdn.sqhk.co/xeduwukaxusa/Qih0jeG/wesalizut.pdf
    • http://digitaltoolsfor.xyz/chemistry_1_ionic_bonding_practice_problems_worksheet_answersggz26.pdf
    • https://cdn.sqhk.co/wirubetena/5gcngjc/16147985099.pdf
    • http://deemonatrafik.xyz/safety_can_express_ebayf5vmx.pdf
    • https://cdn-cms.f-static.net/uploads/4489732/normal_603522b5e8837.pdf
    • https://static.s123-cdn-static.com/uploads/4421613/normal_5fe2a056b6064.pdf
    • https://cdn-cms.f-static.net/uploads/4464524/normal_6041e6b583c4f.pdf
    • https://cdn.sqhk.co/xubafofin/jjdripG/bevogapod.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/bubisifapagefe/large_format_camera_for_sale_ebay.pdf
    • https://s3.amazonaws.com/mibiwivanetuj/70049782738.pdf
    • https://uploads.strikinglycdn.com/files/84a0ef68-e6ba-4402-b686-743a60fb233f/lifesource_ua-767_plus_ac_adapter.pdf
    • https://s3.amazonaws.com/minaxigevani/611929587.pdf
    • https://s3.amazonaws.com/mulerux/23413800569.pdf
    • https://uploads.strikinglycdn.com/files/3bbc2298-6280-4ea4-8295-fdc44dd42d5a/pasiwiboregirugutaxis.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_off0000e262.bin
c8ebdb404d231edae74b3f3c591a704597e964734fd38f8d9c7a4f2748eca37f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE262 5292 bytes
font_01_sfnt_off0000f489.bin
f67d94729ab0d468b346361dd0454abde675e098fac95b94c72fa58e95237418
pdf-font-stream PDF embedded font (sfnt) at offset 0xF489 11340 bytes