Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a54071efd4fa82d…

MALICIOUS

PDF

70.0 KB Created: 2021-02-07 21:00:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: a9089407c5453a37a4a46ff7e9a4b6f5 SHA-1: a39dda9a5b5e7324085c4c5f885f1f610a2516ad SHA-256: 2a54071efd4fa82d989f6829dd9482350dac5d366afe956f4abec20dc9a5990a
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The presence of multiple embedded URLs, many with unknown reputations, further supports this assessment. No scripts were extracted, but the PDF structure and embedded URIs suggest a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://leonvi.ru/wb?keyword=hy%20vee%20bakery%20sheet%20cakes PDF link annotation
    • https://cdn.sqhk.co/kukelagalefe/Pidhgf8/java_game_maker_software_free_download_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kafexobesa/bgghajc/baby_yoda_coloring_pages_printable.pdfIn PDF document text
    • http://vivabozuna.iblogger.org/aluminium_extrusion_process_project_report.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421613/normal_5fe2a056b6064.pdfIn PDF document text
    • https://cdn.sqhk.co/tiwasusul/hcgdlja/lighthouse_inn_rockport_fulton.pdfIn PDF document text
    • https://cdn.sqhk.co/nixafusoda/icTPjkr/givisimefuzapemogobun.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419642/normal_5fc7996e22f42.pdfIn PDF document text
    • http://dovulup.iblogger.org/ginawagu.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/lanaladu/hanna_instruments_safety_data_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/bojafazes/skype_old_version_windows_10.pdfIn PDF document text
    • http://dajidagetulawu.epizy.com/ninuvuvadapak.pdfIn PDF document text
    • https://s3.amazonaws.com/golepe/bourree_dance_and_performing_arts.pdfIn PDF document text
    • https://s3.amazonaws.com/jovekus/jasper_reports_encoding.pdfIn PDF document text
    • https://s3.amazonaws.com/tenunud/89967287718.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/wolomukedoruwiduxepif.pdfIn PDF document text
    • https://s3.amazonaws.com/sisaxu/barcode_scanner_example_in_android.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_off0000d512.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD512 5180 bytes
SHA-256: 2d7e0b0ed72c760e15e6aa3c87376cb40476bcf45abad687466d6cc3a9f4c2ea
font_01_sfnt_off0000e6bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6BC 10628 bytes
SHA-256: 1ebefc6650a60f6cad6693323a2fd64bdc118cdbc1c71a6ab948c5f2f5cedcc3

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