Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b7a96cd56131d44…

MALICIOUS

PDF

86.1 KB Created: 2021-05-05 23:43:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 2aa3ecf06a9a968a9e2bfe2daa1c70f4 SHA-1: 352a2f870eb23e027ba0b707147bec6d25ad02d7 SHA-256: 8b7a96cd56131d4499ba4908eaa877303010aeb34f98104ec8d473d725a5823b
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is a PDF that contains a lure for a "Hindu baby names book pdf free download". It embeds an external URI pointing to a suspicious domain, which is likely intended to host or redirect to a malicious payload. The ML classifier and ClamAV detection strongly indicate malicious intent, consistent with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/strik?utm_term=hindu+baby+names+book+pdf+free+download
    • http://shopbest.online/lapetofukemexokegaliwemp0372.pdf
    • http://subbellassecret.com/48256825476k2tm7.pdf
    • http://kafalukuwemi.mygamesonline.org/2639795045.pdf
    • http://armada.technology/adobe_premiere_portable_download6rhbh.pdf
    • http://nasporte1.fun/dirifuvelyotkk.pdf
    • http://fishland.store/81792989964sd95i.pdf
    • http://tewosube.mypressonline.com/bufepozanapiwik.pdf
    • http://berozabekep.sportsontheweb.net/37063126668.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fogobesu.rf.gd/tidevugovamawobad.pdf
    • http://burerekel.rf.gd/drawing_tutorial_download.pdf
    • http://batefagut.epizy.com/crystar_ps4_trophy_guide.pdf
    • https://uploads.strikinglycdn.com/files/33ae014c-8dd3-4fc0-a714-2be1707538a1/how_to_draw_isometric_view_in_autocad_2d.pdf
    • http://podixevobelataw.rf.gd/22811942363.pdf
    • https://uploads.strikinglycdn.com/files/65a9c9f0-24a5-41ff-b148-297f5014b609/ginisagani.pdf
    • https://uploads.strikinglycdn.com/files/d3c47352-034f-4b67-8668-dd6595365dfb/how_can_i_become_a_ham_radio_operator.pdf
    • https://uploads.strikinglycdn.com/files/10420e5c-52ad-439d-abc1-566c4eabc2df/blue_yeti_blackout_microphone_best_buy.pdf
    • https://uploads.strikinglycdn.com/files/73e694bd-6bf5-424a-935d-444bf8ae9db6/my_samsung_tab_wont_connect_to_wifi.pdf
    • http://witopovuketoj.epizy.com/automate_the_boring_stuff_with_python_by_al_sweigart.pdf
    • http://jifujurudale.epizy.com/41046246351.pdf
    • https://uploads.strikinglycdn.com/files/b261ec36-e51a-4387-b614-2a39c5651a9c/emotional_first_aid_summary.pdf
    • http://nuzikenevizut.onlinewebshop.net/rejepisi.pdf
    • https://uploads.strikinglycdn.com/files/87c53bbf-77b9-485b-a09c-39f22b0ae934/94041684197.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_off00011083.bin
e3fe09bbb13a56c15d57d590a662a94823bbcd6bcbea6ddc20e4846a3ba49c13
pdf-font-stream PDF embedded font (sfnt) at offset 0x11083 5548 bytes
font_01_sfnt_off0001235b.bin
dda87b14bb84c6e0ada2e9c03ed152ea729f4bc6f289c4201e75dd4776c20ffe
pdf-font-stream PDF embedded font (sfnt) at offset 0x1235B 11724 bytes