Malicious PDF — malware analysis report

Static analysis result for SHA-256 12be35248957da39…

MALICIOUS

PDF

73.6 KB Created: 2021-03-31 13:27:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 07e12c5f74b504aa1e69f35fd8e9548b SHA-1: b3825c6e8d773f75d6c0036aa4e6c8bcd1970e36 SHA-256: 12be35248957da39cae8cce545eacd8fa1917a4b107d9e392536e3f2661666a6
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. The embedded URL, 'https://xezojetit.ru/123?utm_term=ncert+english+beehive+class+9+solution+pdf', suggests a lure related to educational materials to deceive users. While no scripts were explicitly extracted, the PDF structure and the nature of the embedded URI are indicative of a malicious document, likely delivered via spearphishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://xezojetit.ru/123?utm_term=ncert+english+beehive+class+9+solution+pdf PDF link annotation
    • https://cdn.sqhk.co/begokaxawip/ceGjfji/vertigo_movie_720p.pdfIn PDF document text
    • https://cdn.sqhk.co/feguzuvubut/hiShcLk/zajejamexewupigoki.pdfIn PDF document text
    • https://cdn.sqhk.co/bitowiso/hfihE1C/wudulefapiwaw.pdfIn PDF document text
    • https://cdn.sqhk.co/lekibefefu/gflgMjf/piwerozuw.pdfIn PDF document text
    • https://cdn.sqhk.co/pigexebobe/wgfheXF/football_predictions_soccer_platform.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/9fd34d1e-85a6-4980-9232-6405e32e3f14/34941429298.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/63996243540.pdfIn PDF document text
    • http://putajisuguxavul.rf.gd/17411671162.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/82974234197.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b75c6bf-6914-4456-b19a-368b56151ac2/simbolo_perdido_pelicula_completa_en_espaol.pdfIn PDF document text
    • http://zitejilid.epizy.com/firebase_barcode_scanner_example_android.pdfIn PDF document text
    • https://s3.amazonaws.com/tetenifeme/schumacher_xp2260_battery_charger.pdfIn PDF document text
    • https://s3.amazonaws.com/zifilobesumafi/71328019029.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/whirlpool_refrigerators_french_door_counter_depth.pdfIn PDF document text
    • https://s3.amazonaws.com/retisovojor/wukoxufiwurudowifoga.pdfIn PDF document text
    • http://gobavaduxa.epizy.com/best_hd_wallpaper_for_android_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/what_is_the_surface_area_formula_of_half_a_cylinder.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e0df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DF 5740 bytes
SHA-256: c6b71329297527a9c3024de58eb21d75a59cd1bcb7aa383b641901780f933010
font_01_sfnt_off0000f470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF470 10864 bytes
SHA-256: ef02a52dc3f01e5785e2d0a2cb318c142090c5d957cafd8183fb63c270842708