Malicious PDF — malware analysis report

Static analysis result for SHA-256 2548a496e4462039…

MALICIOUS

PDF

71.2 KB Created: 2021-04-07 18:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1625cfcd818d572ce081113ced8b0f58 SHA-1: 7658c5eb223e26e493ed33be30c140f99d9f36ff SHA-256: 2548a496e44620397ed330048f01ede6bd88f94b78fe84d3f72b41e9cafd270b
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to a suspicious domain, suggesting it's used to redirect users to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a phishing or malware distribution lure.

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://golowaki.ru/123?utm_term=concertino+op+26+weber+sheet+music
    • http://autoport76.online/24757810694zkazz.pdf
    • https://cdn.sqhk.co/ravawiku/3vigfgf/jutanure.pdf
    • https://cdn-cms.f-static.net/uploads/4382421/normal_600a1b50ec495.pdf
    • http://antileqphh.site/5139549412497zxc.pdf
    • https://cdn.sqhk.co/xijogedobu/zgh17rp/apna_time_aayega_song_mr_jatt.pdf
    • https://cdn.sqhk.co/dapubebireba/uhjvKhd/xexinizusikebef.pdf
    • https://cdn.sqhk.co/porodiwaten/hc6jifB/space_engineers_script_update_frequency.pdf
    • https://cdn-cms.f-static.net/uploads/4370737/normal_60594748a7104.pdf
    • https://cdn.sqhk.co/sepetuvab/ihcdGAV/84661446306.pdf
    • https://cdn.sqhk.co/miwiwefe/jehdhdd/95251614408.pdf
    • http://pasetbs.xyz/super_sonic_exe_wallpapervhnfb.pdf
    • https://cdn.sqhk.co/muzolorakow/gi8Xyhi/oxygen_tanks_for_breathing_problems.pdf
    • https://cdn.sqhk.co/sazipuvaxiv/ghhiKia/68520072124.pdf
    • http://oneitshop.info/804515280837uijw.pdf
    • http://khareedforosh.com/clt_full_form_in_education7hlhg.pdf
    • https://cdn.sqhk.co/piwizogir/jdFuiiO/emirates_auction_approval.pdf
    • https://cdn.sqhk.co/gajerivab/WmJif0e/vofegunupuromujonakizafa.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/ccf927a6-7802-4b85-bc17-13747121c151/wijiwopolodifudu.pdf
    • https://uploads.strikinglycdn.com/files/0cd723d0-9fd3-453f-b9ec-4ac57ed49d38/97910561925.pdf
    • https://uploads.strikinglycdn.com/files/77622e8e-6403-4cfe-948c-93020b36c98d/how_much_does_it_cost_to_get_a_new_exhaust_system.pdf
    • https://uploads.strikinglycdn.com/files/150b4cdd-35cb-462d-b130-dbdc3e6003be/reference_code_s0600_spectrum.pdf
    • https://uploads.strikinglycdn.com/files/cd4be00a-a502-4f19-b2a9-416bb6bf014c/48414438119.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_off0000d794.bin
d6ac82dffcf553f2db647cfad78d60ccf7029342a7c6a758f43380e8b80283f4
pdf-font-stream PDF embedded font (sfnt) at offset 0xD794 5352 bytes
font_01_sfnt_off0000e9b2.bin
082bbfe0151201b5294a55967adb22bdd3fbdaf1bb466cd82c5e4234cfeeab43
pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B2 11384 bytes