Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6ecbc4b8027e2de…

MALICIOUS

PDF

76.0 KB Created: 2021-03-29 12:28:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c0b7a220cc11997bb66645a098922789 SHA-1: 2aefb2cde1ada49029fa7e9206ce18d93498aa00 SHA-256: f6ecbc4b8027e2de6ae60822effdba90d96192f85bf4d701049458eefc11a575
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs, one of which is presented as a search result for a document, likely to trick the user into downloading a malicious payload. No scripts were extracted, but the presence of multiple suspicious URLs suggests a phishing or malware distribution attempt.

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://dugedepap.ru/award?keyword=logical+framework+approach+example+pdf
    • http://onlineeshop24.xyz/messenger_app_for_macbook_air3ri73.pdf
    • https://cdn-cms.f-static.net/uploads/4492246/normal_5fd5f069207ec.pdf
    • http://iglivesupportteam.com/thoptv_app_for_android_free_downloadql2kj.pdf
    • https://cdn-cms.f-static.net/uploads/4410730/normal_600fb96b25316.pdf
    • http://matteset-spon.space/how_do_apc_battery_backups_workk25qb.pdf
    • http://tokio-2020.fun/wosomop93f81.pdf
    • http://itravelgr.com/ti_nspire_cx_cas_software_free_download921qo.pdf
    • https://cdn.sqhk.co/sidamebo/4FkdRji/thriftbooks_dallas_location.pdf
    • https://wofovado.weebly.com/uploads/1/3/1/8/131871653/9766019.pdf
    • https://cdn.sqhk.co/buwuvibija/hb5hehj/big_wine_glass_bottle.pdf
    • http://kefoweloruzopos.22web.org/chess_opening_queen_s_gambit.pdf
    • https://maviwodoke.weebly.com/uploads/1/3/1/6/131606431/7187895.pdf
    • http://zootime.store/nufigegubaveruwifuxf9m6g.pdf
    • http://cardioactiveitalia.site/wotinoneroxonizalopeputavbs9xi.pdf
    • https://cdn.sqhk.co/letarezetap/Gijjhq7/vepoxonojimugapotap.pdf
    • http://agent-spv.space/flowers_in_the_attic_book_review_common_sense_mediamxadi.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://zufagubiles.epizy.com/21915066502.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_off0000e8d9.bin
f64d9fe10e232a0e6196c12d62ed2ca8cccc20d76bb0f7e04435a7fd7eef0d5e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D9 5556 bytes
font_01_sfnt_off0000fbbf.bin
0f8860f247e26b3f2bc470e87cb0df010774c8514be04cd11b363fcaef31811c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFBBF 10936 bytes

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