Malicious PDF — malware analysis report

Static analysis result for SHA-256 a855774490a10b34…

MALICIOUS

PDF

77.5 KB Created: 2021-03-24 03:52:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 7bc963c9706c3757199584bf64eb0074 SHA-1: b24409149efc0e59eb8ce1861139c159195cc3a1 SHA-256: a855774490a10b345c9dbf653b21ec0774dda966228c7e18aa0589166894eb23
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'bologen.ru', which is likely a malicious domain used to host or redirect to a secondary payload. The document body, though heavily obfuscated, suggests a lure related to 'Catia v5 assembly tutorial pdf'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://bologen.ru/award?keyword=catia+v5+assembly+tutorial+pdf PDF link annotation
    • https://dopolijakom.weebly.com/uploads/1/3/4/5/134527788/pizuxowetup.pdfIn PDF document text
    • https://lefipejime.weebly.com/uploads/1/3/4/6/134668800/8b58bc2bf4a7.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/lorurarulafiveviluje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_601b519b5466b.pdfIn PDF document text
    • https://cdn.sqhk.co/zisubiziwu/jk6djaK/cute_daily_planner_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408188/normal_603cf59a885fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482215/normal_60350e71003e9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419822/normal_5fede8c447fd7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471474/normal_5fd65324ac66a.pdfIn PDF document text
    • https://cdn.sqhk.co/wugunifikezu/aUKgj8V/losovuzosukujumoris.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454303/normal_5fd132a186d56.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475995/normal_5ffac3365e969.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408594/normal_6038c7bd2ef53.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/vikukinumet/xbox_360_kinect_calibration_card.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5258ef04-baac-4043-b690-048a56bb1051/jinalokel.pdfIn PDF document text
    • https://s3.amazonaws.com/poguvelefa/gusog.pdfIn PDF document text
    • https://s3.amazonaws.com/jijari/71415924597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f31961ed-f030-4bd2-9cb3-0b8eeb21e992/what_is_sociology_class_about.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/214ba7f4-6d88-4eec-9e8c-fd9b4ebc66e9/feistel_cipher_structure_ppt.pdfIn PDF document text
    • https://s3.amazonaws.com/mutirexa/does_bushnell_tour_v3_have_slope.pdfIn PDF document text
    • https://s3.amazonaws.com/dutimajizowa/gezodafiken.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0a0732a-7699-499e-8716-4fbd481b9c86/54619411919.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b3fec8c-96ff-4e84-8dca-f04d0755e99c/new_yorker_cover_april_6_2020.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_off0000f2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D8 5516 bytes
SHA-256: 45236afcbd4e74cd723824fdb97cce48448976e90cd7473ca1f8a27244fac827
font_01_sfnt_off00010586.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10586 10124 bytes
SHA-256: a4dd2eb91d00261648aeab1c8c740df21c9d448ef123990690ddcd55d7ab191d

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