Malicious PDF — malware analysis report

Static analysis result for SHA-256 62df21a6107c074e…

MALICIOUS

PDF

64.1 KB Created: 2021-01-24 03:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: fa6561ed75f99caf88bedca7d7904744 SHA-1: ef2965c3fc6a4f79dd52238572eeaca04d2e778b SHA-256: 62df21a6107c074ee92875ec8ba6e5432c5a8aa1053bff967473a870105a4c6f
96 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. An external URI pointing to 'bologen.ru' was extracted, suggesting a phishing or malware distribution attempt. No scripts were extracted, but the PDF structure and embedded URI are strong indicators of malicious intent.

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/wb?keyword=run%20hulu%20ending%20explained PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446942/normal_5fd7dad248728.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414494/normal_5ffc2e8cbdcac.pdfIn PDF document text
    • http://fuvufurewuf.iblogger.org/13977034936.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496826/normal_5febed022c6e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490125/normal_5fc86e9313ddd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425908/normal_60013579ef10d.pdfIn PDF document text
    • https://site-1166675.mozfiles.com/files/1166675/tegra_crafting_and_building_survival_shooter_mod_apk.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/zufaxepixiguxax/kelibawotubodabavub.pdfIn PDF document text
    • https://s3.amazonaws.com/ritoma/aided_school_information.pdfIn PDF document text
    • https://s3.amazonaws.com/vipinib/paninatusuvokalorisonepi.pdfIn PDF document text
    • https://s3.amazonaws.com/nuvukivaxiren/3d_model_for_powerpoint.pdfIn PDF document text
    • http://nifiloxoburufi.rf.gd/cayman_islands_government_scholarship_form.pdfIn PDF document text
    • http://namajuve.epizy.com/luzewifonadib.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/46405462353.pdfIn PDF document text
    • http://sotilikesad.epizy.com/awakened_shrub_monster_manual.pdfIn PDF document text
    • http://dojomasamolazib.epizy.com/67745268081.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_off0000b64e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB64E 4716 bytes
SHA-256: 0edee70ab85c9ba07d17eaa7ffd3d3691f482b697e78470657c400a05626ae94
font_01_sfnt_off0000c640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC640 9196 bytes
SHA-256: 5bd03a2d085477d2d9ffacc46989b227fb52eeb143e73294b1bbe24035104ff1
font_02_sfnt_off0000e588.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE588 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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