Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c29c5eb13c6c191…

MALICIOUS

PDF

80.7 KB Created: 2021-04-07 22:08:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f193ee55a3406d7d5d8b0b4aa2aec9b1 SHA-1: af23988df4577c598b0b949d36eb3b5e4cc05654 SHA-256: 8c29c5eb13c6c19107cae84413f39ab0ec23cc454131441017d8f12fd2cf6ce9
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL pointing to 'seumenha.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, suggests it is related to 'El verbo exacto 2a-5 answers', possibly a lure to disguise the malicious nature of the link.

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://seumenha.ru/wix?keyword=el+verbo+exacto+2a-5+answers
    • https://cdn.sqhk.co/vemetafije/PibiiSs/pandemic_unemployment_assistance_florida_requirements.pdf
    • https://cdn.sqhk.co/nosinoxogum/icNxeia/whatsapp_status_video_bhojpuri_song.pdf
    • https://cdn.sqhk.co/jetirivotu/8gcjiXr/fishing_online_game.pdf
    • http://static-get.top/how_to_read_stock_charts_for_beginners5zxaz.pdf
    • https://cdn.sqhk.co/poronujefino/dgfpeOM/82839534051.pdf
    • http://datiwufirul.medianewsonline.com/nezodaragog.pdf
    • https://cdn.sqhk.co/rogumabutur/11nk8ze/lalax.pdf
    • http://plsale.pro/wuvoxoxiranumujuwizibebyqvyl.pdf
    • http://bestsaleshopin.xyz/gerupewesidu7gla.pdf
    • http://texegevesimiruv.22web.org/40036788270.pdf
    • https://cdn.sqhk.co/fekurisakez/d6jghhj/rider_strong_net_worth_2020.pdf
    • http://aicberg.net/romosezotitusevixiremoru9i6xk.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/dfd10ed6-d22f-4017-b602-d6efbd4c02a3/22302160918.pdf
    • https://uploads.strikinglycdn.com/files/e7a2174c-bf16-4ba7-929c-e0a5e4260364/nukuzejol.pdf
    • http://gubadif.myartsonline.com/bleaching_gigi.pdf
    • http://pobepogimivej.rf.gd/nixevubanugaz.pdf
    • https://uploads.strikinglycdn.com/files/de93715d-8ce5-421a-88ed-c448e3912e04/how_to_change_sky_q_channel_without_remote.pdf
    • https://uploads.strikinglycdn.com/files/34e1bbbd-6357-4de7-96bb-69495c48f9ba/92260952896.pdf
    • http://kutuwawelozekot.rf.gd/basswood_sheets_3_16.pdf
    • http://kivekovojador.epizy.com/download_film_fifty_shades_of_grey_2019_sub_indo.pdf
    • http://rixibedi.onlinewebshop.net/2013_honda_civic_service_due_reset.pdf
    • https://uploads.strikinglycdn.com/files/db20eab0-1958-40c2-9ec4-b5d463367137/zugudafebefadozikotonilut.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_off0000fc74.bin
c3a26717adf22f5faa883602d58e21c70b629fc58427e605e6ed3ccf52f9b202
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC74 5400 bytes
font_01_sfnt_off00010f01.bin
fd49a2e9b98ae7d12efb0004461c6898626fc83274b016ffed2730c764cca560
pdf-font-stream PDF embedded font (sfnt) at offset 0x10F01 12208 bytes