Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc7a47a9fc0b4c80…

MALICIOUS

PDF

80.0 KB Created: 2021-03-15 17:36:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d8c59cb88b145ebd5a0861f2d2f2ee90 SHA-1: d3f439c089607db0ca755f889decffc0b335b5a7 SHA-256: fc7a47a9fc0b4c80a639984303acaec35d76226b9540839fa811d9e6599cdf20
96 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The document body, though heavily obfuscated, contains text related to 'Action games free offline', suggesting a lure to download or access malicious content. The presence of external URIs, such as https://soxebez.ru/123?utm_term=action+games+free++offline, indicates the likely intent to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://soxebez.ru/123?utm_term=action+games+free++offline
    • https://cdn.sqhk.co/pimepojuti/hahdBih/57467344273.pdf
    • https://kukibutojiw.weebly.com/uploads/1/3/0/7/130775835/238a658ee4d80f6.pdf
    • https://belukuxar.weebly.com/uploads/1/3/5/3/135312366/gataxevom.pdf
    • http://keysecret.ru/4666626899681uvt.pdf
    • http://abreudesigns.com/divergent_2014_movie_download_in_hindi_720pteny4.pdf
    • https://cdn.sqhk.co/mepowokugo/b1EiiFV/88210586822.pdf
    • https://cdn.sqhk.co/keridola/gg56jav/rofaned.pdf
    • http://gtmedis.com/mixitewesarosekuzcrsk.pdf
    • https://static.s123-cdn-static.com/uploads/4448549/normal_5ffdacdbd8cc7.pdf
    • https://cdn.sqhk.co/nezerozara/Libvem0/stop_payment_on_ebay_gift_card.pdf
    • https://cdn-cms.f-static.net/uploads/4403429/normal_5fdb8a7d9b8b8.pdf
    • https://fifukujujaki.weebly.com/uploads/1/3/2/6/132680890/c69ea.pdf
    • https://cdn-cms.f-static.net/uploads/4485569/normal_6045ea4833adb.pdf
    • https://tupeduwexawagov.weebly.com/uploads/1/3/1/6/131607208/9352472.pdf
    • https://nurosamemozixa.weebly.com/uploads/1/3/4/3/134375837/818ccd609a.pdf
    • https://cdn-cms.f-static.net/uploads/4463812/normal_604a43fe23ea2.pdf
    • https://cdn.sqhk.co/dikizumi/VhcPjjG/world_war_1_simulator_flight.pdf
    • http://jigitozunawada.66ghz.com/what_are_different_words_for_emotion.pdf
    • http://apsdd54gfv.xyz/how_to_clean_dyson_cinetic_big_ball_multi_floor_filteri6qzn.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/tapelu/jofozozutabotenimanem.pdf
    • https://s3.amazonaws.com/levovod/i_am_alone_hd_images_free.pdf
    • https://s3.amazonaws.com/vobuturinivi/80977027569.pdf
    • https://s3.amazonaws.com/sirilagewuga/salary_of_senior_software_engineer_in_malaysia.pdf
    • https://s3.amazonaws.com/nuvukivaxiren/xonoxexarunomoma.pdf
    • http://digasima.rf.gd/pexaj.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f0e2.bin
b5b9ac4a9ee4e549d158df7738d71c8afa5dd6b44d56234ea1e25b009107bd06
pdf-font-stream PDF embedded font (sfnt) at offset 0xF0E2 4980 bytes
font_01_sfnt_off000101a2.bin
94f8ed623be6f5107ad57a854e5b14acbc9e2d92648357b55a30d48ac049ffcd
pdf-font-stream PDF embedded font (sfnt) at offset 0x101A2 10192 bytes
font_02_sfnt_off0001248d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x1248D 4324 bytes