Malicious PDF — malware analysis report

Static analysis result for SHA-256 884a65dd24f3481d…

MALICIOUS

PDF

80.3 KB Created: 2021-03-29 19:21:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5f542d3162232e32408f8ae93b6caa70 SHA-1: 59fa16ca0bcbc0f84b1bf095f24a4399c93dacf1 SHA-256: 884a65dd24f3481db576126256d7220e71bb19170dd1b9d8393325d0f1248632
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 flagged this PDF as malicious, specifically as a phishing trojan. The document body, though heavily obfuscated, appears to reference 'Logback appender json format', suggesting a lure to trick users into visiting the malicious URL for potentially malicious purposes.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://pelibifir.ru/123?utm_term=logback+appender+json+format
    • https://cdn.sqhk.co/mejeteboxav/icgcjfg/temple_run_3_game_car_video.pdf
    • https://cdn.sqhk.co/jorisuzil/cgrjdp7/25398320551.pdf
    • http://xabudumame.mypressonline.com/internet_archive_telugu_books.pdf
    • http://mofobawosenej.mygamesonline.org/89271727344.pdf
    • https://wibugosavuzatug.weebly.com/uploads/1/3/4/3/134349607/jakixasuxe-tofonejuvox-rijugor-belikexodojebu.pdf
    • https://nimukebobe.weebly.com/uploads/1/3/4/5/134527887/00986c6c82d.pdf
    • https://lerofiputa.weebly.com/uploads/1/3/4/3/134367001/fc640c200881.pdf
    • https://cdn.sqhk.co/pojimisuso/ggMgfAa/phoenix_news_12_weather.pdf
    • https://widonudafedezu.weebly.com/uploads/1/3/0/7/130776490/nupumosuzesemapok.pdf
    • http://zonizubiro.getenjoyment.net/gegatisejegeragoku.pdf
    • https://tuxutumixebapi.weebly.com/uploads/1/3/1/4/131438514/jizera-jigoxovak.pdf
    • https://cdn.sqhk.co/wefenosefob/seDjgij/tutukipenodamerozid.pdf
    • https://cdn.sqhk.co/tezizejaropu/XxPjdii/new_room_escape_game_secret_escape_moviescaped.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/04aeee3c-d5f0-4c46-a5b8-ed99801f0df0/what_is_a_good_beginners_red_wine.pdf
    • https://720c7b34-a033-4bf0-83ea-6be17de98aa2.filesusr.com/ugd/03ef8e_2e4711a9f8484f01b13d378acbe44ab4.pdf?index=true
    • http://nopugorib.onlinewebshop.net/adobe_reader_download_windows_10_free.pdf
    • https://s3.amazonaws.com/zoxewudunigus/57852377710.pdf
    • https://uploads.strikinglycdn.com/files/32b9821c-b9ba-42e0-ae88-c80a5cc37a01/zovubaz.pdf
    • https://uploads.strikinglycdn.com/files/c6159677-b571-4f17-a03d-c3338cd50533/92516824577.pdf
    • https://abe99a74-823b-4c5d-85d6-f8d8de52422f.filesusr.com/ugd/73cc63_5358cf47531e4fff9c7df9529e089d1c.pdf?index=true
    • http://supuwevul.atwebpages.com/internet_of_things_tutorialspoint.pdf
    • https://uploads.strikinglycdn.com/files/3d1fe6a3-7470-44c5-92cc-c9c2f852edb7/fewizodazilotu.pdf
    • https://s3.amazonaws.com/kefodek/95692189098.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://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off000115c3.bin
f44bbdde3f8e328ce2a72eb2bc51d9a7270fcb7421ffbeef0a1a22ef3946adce		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x115C3 18740 bytes
font_00_sfnt_off0000dbc0.bin
083cf93ca6b943f8bf38e9b61f96ca15812807620b4df0732e019e392a4b48f9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC0 5664 bytes
font_01_sfnt_off0000ef05.bin
7a139edcbb886e7f486e97f6e1e0f6c4ee8ee5b746f3fdb71a29911f0b5acd92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEF05 11244 bytes

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