Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a7ba403441e80c1…

MALICIOUS

PDF

94.0 KB Created: 2021-02-02 22:31:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: a174492ac90e421e6380193bbe31ec03 SHA-1: 2fbf8aae04f0bfe964371cc0313b83605b3b5850 SHA-256: 5a7ba403441e80c12c326a85928d948e84e5f79e6004d79672e678cb1706c62d
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 high risk score. It contains an embedded URI pointing to 'https://jacksth.ru/123?utm_term=nine+noble+virtues', which is a strong indicator of a phishing or malware distribution attempt. Although the document body is heavily obfuscated, the presence of external URLs and the overall detection profile suggest a malicious intent to redirect the user to a harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jacksth.ru/123?utm_term=nine+noble+virtues PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4485321/normal_5fdab9ae68395.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465125/normal_5fe3fb5c45da0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373261/normal_6013476acabed.pdfIn PDF document text
    • http://sarhello.online/50482614142qb4l.pdfIn PDF document text
    • http://idealicaitaly.site/14881344790e5dvs.pdfIn PDF document text
    • http://lnstagram-copyright-supports.com/36179807583m07lj.pdfIn PDF document text
    • http://air-calm2.club/yumbina_efectos_en_mujeres_videos_bojk4ht.pdfIn PDF document text
    • http://morpeoplelife.ru/how_to_grow_wings_on_your_backc5h93.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4445733/normal_5fe005a7013cc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415936/normal_5ffff7f9ea0c4.pdfIn PDF document text
    • http://repair-kvadrokopterov.ru/wepojeto96ju5.pdfIn PDF document text
    • http://yozi.store/66603957269vlirb.pdfIn PDF document text
    • http://copyrightram.net/sherlock_holmes_novelssixca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393506/normal_5fe7928b6c991.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4418968/normal_6009061a92cb2.pdfIn PDF document text
    • http://nuveclovet.xyz/facebook_messenger_video_call_android_not_workingtnyqr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/63699536839.pdfIn PDF document text
    • https://s3.amazonaws.com/woxewiwupir/51818736389.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/cdc_influenza_treatment_guideline.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/malomasagebimuwuvifopo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000128b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128B8 4520 bytes
SHA-256: 83d457b5984d77c1be498af722bcf95b73e0daa437d639eb00ec7cd2108020be
font_01_sfnt_off00013829.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13829 10776 bytes
SHA-256: ed1c762a59a9719859bdb342772fd81b3cc742164a747ead8a7f6355a17acca6
font_02_sfnt_off00015c62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C62 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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