Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ce7a5dfc2f62d2d…

MALICIOUS

PDF

76.7 KB Created: 2021-03-31 00:34:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1461e164266cb87472b5ccf5ac62a2c4 SHA-1: 625feae94275a3cd66f2c75249884bc6146939b3 SHA-256: 3ce7a5dfc2f62d2d0733c91d5762d863c21b8082401a8012e57c1d11496a8a2d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file was detected as a malicious PDF by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL, https://ponafet.ru/award?keyword=ifs+botany+syllabus+pdf+download, suggests a phishing or social engineering lure, likely attempting to trick the user into downloading a further payload. The document body, though heavily obfuscated, contains metadata related to wkhtmltopdf and a date, suggesting it was generated programmatically.

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://ponafet.ru/award?keyword=ifs+botany+syllabus+pdf+download PDF link annotation
    • http://dekagexagupeje.iblogger.org/how_to_use_sony_dslr_as_webcam.pdfIn PDF document text
    • https://cdn.sqhk.co/jijasitov/c2Hxifs/14993530714.pdfIn PDF document text
    • https://cdn.sqhk.co/wowasuperan/cjc54Y3/95733663614.pdfIn PDF document text
    • http://movikewenatorug.iblogger.org/31276963853.pdfIn PDF document text
    • https://cdn.sqhk.co/jilijibimi/hjUhcyz/36536938516.pdfIn PDF document text
    • https://cdn.sqhk.co/nofatazor/n5QZnX1/zulonulusemegudodul.pdfIn PDF document text
    • https://cdn.sqhk.co/saseponirifa/jcBifsG/vanilla_cake_recipe_with_whole_milk.pdfIn PDF document text
    • https://cdn.sqhk.co/xetajikok/tm2geal/v4_mustang_0-_60.pdfIn PDF document text
    • https://cdn.sqhk.co/kamupudoro/7ggfVsR/gps_speedometer_odometer_speed_mileage_tracker.pdfIn PDF document text
    • http://lelonul.iblogger.org/odontogenic_cyst.pdfIn PDF document text
    • https://cdn.sqhk.co/libuzewis/bjdgfhj/56974738978.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/lemerisinivum/dickies_boiler_suit_size_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/calculus_volume_1_solutions.pdfIn PDF document text
    • https://s3.amazonaws.com/bokofapig/cakewalk_sonar_le.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/fender_hot_rod_deluxe_iv_user_manual.pdfIn PDF document text
    • http://zinuruxe.epizy.com/virulomugixafogel.pdfIn PDF document text
    • https://s3.amazonaws.com/vovuzize/flower_images_all-_free-_._com.pdfIn PDF document text
    • http://sejojoxo.epizy.com/vsepr_theory_practice_worksheet_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/baxegezivumi/dutokefo.pdfIn PDF document text
    • https://s3.amazonaws.com/sojebelevenex/95147545017.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_off0000efcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFCB 5208 bytes
SHA-256: 3ec56d5d98eaf3eabccb7a62d6a383fada60e388e9fe436627ca9c8cd3081458
font_01_sfnt_off000101b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101B1 10540 bytes
SHA-256: 2afd33ad3de493cd80a7de7781c5ee4b974a0e3a0315d8f1ade5e907b3fc450f

Open this report in the interactive analyzer, or submit your own file for analysis.