Malicious PDF — malware analysis report

Static analysis result for SHA-256 0022ca50090193ff…

MALICIOUS

PDF

77.7 KB Created: 2021-03-23 21:16:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8fb753c49358f0e170c5791021059212 SHA-1: 27b4c1ff71e6f6bde42f648e46447998df2dec70 SHA-256: 0022ca50090193ff51b767ced57d1e51375d66de641655fbba6957a25a68fb7a
96 Risk Score

Malware Insights

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

The file was detected as a malicious PDF by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'lozipotod.ru', which is likely part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, suggests a lure related to 'Gamete formation in dihybrid cross', potentially to trick users into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lozipotod.ru/123?utm_term=gamete+formation+in+dihybrid+cross
    • https://cdn.sqhk.co/luzigagoguna/gd9phh4/kotokigi.pdf
    • https://werumitepoli.weebly.com/uploads/1/3/0/7/130739038/fc8db5a0.pdf
    • https://zujujoweb.weebly.com/uploads/1/3/5/2/135297083/da0d2.pdf
    • https://static.s123-cdn-static.com/uploads/4415077/normal_6009ac8d18673.pdf
    • https://cdn.sqhk.co/nidaruzada/dhh3kii/42165113167.pdf
    • http://jonebukusopovet.mygamesonline.org/zobuxej.pdf
    • https://jozufibajas.weebly.com/uploads/1/3/0/9/130969385/kozelanori_xifina_zumixukesux.pdf
    • http://lupazul.mywebcommunity.org/benim_hocam_corafya_2020.pdf
    • https://sepuvoguzunisam.weebly.com/uploads/1/3/4/4/134488558/2638118.pdf
    • https://lazarenebuf.weebly.com/uploads/1/3/4/8/134885148/57f88279.pdf
    • https://cdn.sqhk.co/rifojimuna/hidhaav/bts_song_offline_download.pdf
    • https://cdn-cms.f-static.net/uploads/4416513/normal_6012e9142d1d5.pdf
    • https://static.s123-cdn-static.com/uploads/4450870/normal_5fde6fdf984eb.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://kopurelotalad.onlinewebshop.net/17110120308.pdf
    • https://s3.amazonaws.com/gapivegek/what_is_factless_fact_table_in_data_warehouse.pdf
    • https://79e8b926-cc52-4cef-90ae-68e3990d752e.filesusr.com/ugd/694d5d_1d24d63d712b4e47a33e0f4f6bc6a755.pdf?index=true
    • https://dae57379-2785-4108-a223-4562ecbfc22e.filesusr.com/ugd/87ad98_50248c4efcb84c1bb59c0da97fd2d0b3.pdf?index=true
    • https://s3.amazonaws.com/pazovugal/moto_g6_play_price.pdf
    • https://s3.amazonaws.com/zulezov/xamarin_forms_picker_binding_itemssource.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_off0000e069.bin
b29c75627e52a1d822021a303100d7436d1c5021d165cecdbc6317fe894d4197		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE069 5292 bytes
font_01_sfnt_off0000f241.bin
dbfd674abb3558097282eabd24152a717696fcfc38d8d829b8574c48232b2fdc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF241 12244 bytes
font_02_sfnt_off00011b5d.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11B5D 4324 bytes

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