Malicious PDF — malware analysis report

Static analysis result for SHA-256 488cf2b4903747fe…

MALICIOUS

PDF

76.0 KB Created: 2021-03-17 01:19:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 00d5d1049cf97d9934f625b3d42146eb SHA-1: 9baa75f60826db4fdea49476ac46d12e6447f480 SHA-256: 488cf2b4903747fef30d173b564590c3bd7d5b2249ff98dfb7d15ab14d96bb2a
104 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and document body suggest a phishing lure, attempting to trick the user into downloading a file by posing as a free e-paper download. The presence of a download button heuristic further supports this social engineering tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://nipisod.ru/award?keyword=eenadu+epaper+telugu+today+pdf+free+download
    • https://cdn.sqhk.co/miseseren/oKwsmib/58768044813.pdf
    • http://contentmedialiteracy.com/download_eraser_serial_codegpklo.pdf
    • http://santecmb-sarl.com/trane_xe60_gas_furnace_manualtudjl.pdf
    • http://drovazvenigorod.ru/rojuvabizuwigo007x.pdf
    • https://cdn.sqhk.co/sutazojawote/iiD6yHq/axis_football_2020_ps4.pdf
    • http://sbrf.link/46168486057jfg0y.pdf
    • https://cdn.sqhk.co/rekubapapup/gepnjfU/iron_spider_kid_costume.pdf
    • https://cdn.sqhk.co/sadebupunen/fiiigjr/35890043616.pdf
    • http://natlegend.space/10353307249wakvb.pdf
    • http://girlita.space/632723923168ri3q.pdf
    • http://best-ital.fun/981968243304wbws.pdf
    • http://copyrightram.net/2005_xc90_repair_manualzya6x.pdf
    • http://shoplus.info/a_major_reason_for_us_involvement_in_latin_america_in_the_1980s_was_tobwuwt.pdf
    • http://prequester.online/what_is_dr_horton_red_tag_eventber8j.pdf
    • https://cdn.sqhk.co/legesizas/H2Vniey/toilet_running_slow_leak.pdf
    • http://accface.in/sixovizetumatepoovok.pdf
    • http://lnstagram-helping-centre.com/petogomesivipuzuvefifixeayltl.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/0abe7dd2-8660-4c92-bc05-53f02e429440/jersey_mikes_giant_meatball_sub_calories.pdf
    • https://uploads.strikinglycdn.com/files/7ece45ce-cb59-4d18-bd3c-714fbef768b5/givosilolebufiwaninivu.pdf
    • https://01c4c9a3-ee74-4db9-a65d-799443b8dbf1.filesusr.com/ugd/a64c8c_91de52c3babf4c588894febe91b8aa2e.pdf?index=true
    • https://edefa294-c65c-46c5-840b-8a4669b9fdfe.filesusr.com/ugd/e4a001_3f0c2a63920d4c2ab1431ae6f86ccf3b.pdf?index=true
    • https://882e4f53-a7e1-4d4a-89e8-a6e6d9f9b805.filesusr.com/ugd/9a13d2_be4da1a3c6b34414bc3027186a9a1367.pdf?index=true
    • https://uploads.strikinglycdn.com/files/0e23cb30-3fda-4998-9524-491fa367ea17/how_to_be_a_3_man_audiobook_mp3.pdf
    • https://uploads.strikinglycdn.com/files/b2795104-0ec3-4eea-83ef-5740a056d0f6/king_lear_act_5_quotes_quizlet.pdf
    • https://2ea9429b-0332-4ee6-bb75-ab9535b56c99.filesusr.com/ugd/e2f7e1_1f75e6f82fdd4029942b032f56b1df9e.pdf?index=true
    • 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_off0000e83c.bin
1773cf935a64aa937c9d49b60294fa7e42e00937d831cc20ca603ac94c75d43c		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE83C 5180 bytes
font_01_sfnt_off0000fa0c.bin
3c4be96df62bfbaca8ae0f35295e6ac6972ab8205d1d1324e3ffd61369d46531		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFA0C 11332 bytes

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