Malicious PDF — malware analysis report

Static analysis result for SHA-256 80800999bf7001e8…

MALICIOUS

PDF

75.3 KB Created: 2021-02-17 20:33:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 599d87284a6a01a7a48bba1cf2d12d5b SHA-1: adafc574f0b4a1775c54f9d0389715f67569e6be SHA-256: 80800999bf7001e80df5de973af39873f23458867764dfa2ed69303ec6b7b74b
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL pointing to 'bologen.ru' which is disguised as a resource for free Premiere Pro transitions. This suggests a social engineering tactic to entice users to click the link, likely leading to a malware download or further phishing 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://bologen.ru/strik?utm_term=premiere+pro+transitions+free+youtube PDF link annotation
    • http://nugekurobeju.iblogger.org/charisma_microfiber_sheets_twin_xl.pdfIn PDF document text
    • http://linawoninup.22web.org/41690762691.pdfIn PDF document text
    • http://rostov-mobile-doctor.ru/46428539324xu5z3.pdfIn PDF document text
    • http://suzuxef.22web.org/junapevejokaruxabidufa.pdfIn PDF document text
    • http://help-bluebadgecenter.com/16218678641ugc23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402280/normal_602ca1c300da4.pdfIn PDF document text
    • http://gagewetero.iblogger.org/96086788346.pdfIn PDF document text
    • http://vknart.xyz/the_music_lesson_victor_wooten07f9j.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/xutomoxu/16618030642.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/weather_report_in_kantaphod.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/81919124876.pdfIn PDF document text
    • https://s3.amazonaws.com/zetubakuz/dojojizelujoraresuvo.pdfIn PDF document text
    • http://lebiwubeso.rf.gd/uses_of_gold_leaf_electroscope.pdfIn PDF document text
    • https://s3.amazonaws.com/ronenitevodo/application_caisse_d_epargne_android_tablette.pdfIn PDF document text
    • https://s3.amazonaws.com/baxadelefofibuz/vufexakasonumug.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_off0000ea69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA69 5260 bytes
SHA-256: 406b91aa09787437a91e0f766b762a2b366914c66eb54325418c5e4dfc9c7a85
font_01_sfnt_off0000fc36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC36 10544 bytes
SHA-256: 75d51b55e9b4c2fedc257d74bcc66e773f26fe779831af9774451fa7d25e6ac7

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