Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ddd709a7294fee0…

MALICIOUS

PDF

75.5 KB Created: 2021-05-03 22:45:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a1a3166b451d1d7a64ae2f7140b8ff25 SHA-1: 1f43bd34f4a072b74487ceb2a384996b95b35445 SHA-256: 6ddd709a7294fee0879e2b752c555bb09666aec264d35ea644952cf7c3d0f55c
96 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URL pointing to a suspicious domain. ClamAV and ML classifiers have identified this file as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to be a book summary, which is a common lure for phishing attacks. No scripts were extracted, but the presence of the malicious URL and the strong detection signals indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://ponafet.ru/strik?utm_term=resumen+corto+del+libro+las+medias+de+los+flamencos
    • https://cdn-cms.f-static.net/uploads/4470703/normal_5fe94ccfc44d0.pdf
    • https://static.s123-cdn-static.com/uploads/4488317/normal_5fe1cb4abb1d1.pdf
    • http://fakixigulidol.mywebcommunity.org/59410702399.pdf
    • https://cdn-cms.f-static.net/uploads/4489843/normal_602092a8cbe14.pdf
    • http://rowexusaje.mypressonline.com/ms_wireless_keyboard_2000_not_working.pdf
    • https://cdn-cms.f-static.net/uploads/4465255/normal_5fe78b68bd96f.pdf
    • https://cdn-cms.f-static.net/uploads/4481065/normal_60192c4214a3a.pdf
    • http://koxelovanalimu.getenjoyment.net/vusejem.pdf
    • https://cdn-cms.f-static.net/uploads/4372085/normal_601493d0b2bef.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://24218389-b518-4ca3-8548-65eaf758daa4.filesusr.com/ugd/c836c3_71bbc8eda185441e8a67d78b6296989a.pdf?index=true
    • https://uploads.strikinglycdn.com/files/728f165c-62e0-455a-a718-cd3d3db56b8a/mtd_5_hp_tiller_parts.pdf
    • https://c6926203-1eb9-401e-9afa-11f61f201807.filesusr.com/ugd/685707_0e02dd380667472bb1055591eea77728.pdf?index=true
    • https://s3.amazonaws.com/jifesu/lusoxojuseserulotu.pdf
    • https://uploads.strikinglycdn.com/files/be093631-e965-4303-97f7-0682b6b58786/lowe_pontoon_boat_owners_manual.pdf
    • https://s3.amazonaws.com/wufujudisu/86960012139.pdf
    • http://nosawakudik.myartsonline.com/make_file_smaller_mac.pdf
    • https://s3.amazonaws.com/rowubunak/3_meters_above_the_sky_movie.pdf
    • https://b09d99c6-da67-4e55-b5b3-baceba093817.filesusr.com/ugd/a69c6c_1982219b98a447788e7fc1a1fd77b66a.pdf?index=true
    • https://s3.amazonaws.com/mamibis/16141234848.pdf
    • https://s3.amazonaws.com/paxivogedewilu/87379147044.pdf
    • https://uploads.strikinglycdn.com/files/a6c2a22d-b082-480a-a2c0-401a9d24b251/2629238157.pdf
    • https://uploads.strikinglycdn.com/files/26210295-7d6e-4945-8e04-096222f94e76/50_shades_of_grey_freed_plot.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_off0000e8e1.bin
0b0e208f4de4b5348913dcb2d3859f2ee66a77c0db10030a7c08eeda686c7fe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8E1 5312 bytes
font_01_sfnt_off0000fad8.bin
f3c702b5ca7b4b8642c01055e267c9a6436476b6e5f91b96d1ab9a152406c063		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD8 11760 bytes

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