Malicious PDF — malware analysis report

Static analysis result for SHA-256 6a38a9fe82ee5431…

MALICIOUS

PDF

87.4 KB Created: 2021-04-03 13:26:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7066e044f6cef16a7fcfc29c128bc7b7 SHA-1: ec9b76cceadcc0bcf7aab1f95a66919cd135e388 SHA-256: 6a38a9fe82ee5431d1f87df6baa3065c794ae5fd3d6657e4764a5a6d7cf20ea8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document body and embedded URI point to a URL that appears to be a phishing lure, disguised as search results for a sporting event. No scripts were extracted, but the presence of an external URI and the overall detection suggest the file is designed to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/wix?keyword=cska+moscow+vs+manchester+united+2009
    • https://cdn.sqhk.co/mujowofapubi/idgejep/84797826888.pdf
    • https://cdn.sqhk.co/toromerepowa/jhPrier/warcraft_game_time_card.pdf
    • http://salleapp.xyz/branches_of_social_sciencevpfn8.pdf
    • https://cdn.sqhk.co/rogapakaler/buFhbhc/hide_the_pain_harold_real_name.pdf
    • http://ekzo-fruit.ru/gavasafetuwibolumidanux35x0m.pdf
    • http://woxuruko.medianewsonline.com/what_to_look_for_when_buying_a_new_car_battery.pdf
    • http://devubowoku.mypressonline.com/the_history_of_slavery_in_africa.pdf
    • https://cdn.sqhk.co/legexere/pifqFjf/16214872750.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://tujupifirafadus.myartsonline.com/el_camino_del_artista_en_accion.pdf
    • https://s3.amazonaws.com/xurixado/ca_real_id_application.pdf
    • https://uploads.strikinglycdn.com/files/036c6db7-7efe-4b35-a56b-fc9d0249e6d6/29545653442.pdf
    • https://uploads.strikinglycdn.com/files/1739afe6-b291-47b4-adf4-e0397b68b29a/gizataviwodararugodikanik.pdf
    • https://uploads.strikinglycdn.com/files/546c3d97-6c15-4b05-85ac-6b612695e7a2/song_of_solomon_quotes_explained.pdf
    • https://s3.amazonaws.com/xojafemori/acknowledgement_in_seminar_report.pdf
    • https://s3.amazonaws.com/tozaduliwubega/cervidil_davis_drug_guide.pdf
    • https://s3.amazonaws.com/voropa/autocenter_changomas_formosa.pdf
    • https://uploads.strikinglycdn.com/files/0270ddae-75f5-4762-be18-c46c52ceb6c9/zogibomenakesim.pdf
    • https://s3.amazonaws.com/gewuwasi/24897595975.pdf
    • https://uploads.strikinglycdn.com/files/839e2e4c-cdb7-46d4-9faa-529eee02da08/batatijupijibemutuvev.pdf
    • https://s3.amazonaws.com/dutimajizowa/chevrolet_trax_2015_manual.pdf
    • https://s3.amazonaws.com/susonanezaj/43921312298.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_off000119df.bin
540f878f3fd2d32ff12cce49e3cc9e02428068ad2cdf25b0399627b79ea2cb5a
pdf-font-stream PDF embedded font (sfnt) at offset 0x119DF 5700 bytes
font_01_sfnt_off00012d30.bin
e16c3df0c19516cd1b3971dd664b456a9f28d40c60ba7c006dcb0fa6493f03c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x12D30 10256 bytes