Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3f1d2d559e77bf…

MALICIOUS

PDF

71.6 KB Created: 2021-05-25 15:36:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 62c71d29cdd6dae62abcd9b2b68a3814 SHA-1: 943198d48f6eaedfad928ce143868efe3d27b5ea SHA-256: 4e3f1d2d559e77bf832459284e843c485e207ab9f087365d13bb809d056720ca
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, 'bologen.ru', which is likely used to host a malicious payload or phishing page. The document body, though partially corrupted, suggests a lure related to a plant catalogue.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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/strik?utm_term=catalogue+of+the+flowering+plants+and+gymnosperms+of+peru+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4453336/normal_606ac56ac46c4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501495/normal_5fd394dfc5744.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482854/normal_5ffa0b8b6aabf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374522/normal_60585b8d1b2ff.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383137/normal_603db3d23adb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419640/normal_600a57f5d5c7b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410418/normal_5fcaa6e31c39b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464522/normal_60650cb79ad6b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465924/normal_603c54adcee77.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451744/normal_5ff4c18ab274c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460463/normal_5fcf4b2830591.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381528/normal_60020e39b0bda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379498/normal_602f6b93b060e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378171/normal_602c923cf341b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/4eff9c49-6cef-4acb-ad1a-fafe6678598e/sujularelaleger.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/zepiwufajet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f50ef1a4-f33a-47a0-9837-4a4760168a48/fundamentals_of_microelectronics_by_behzad_razavi_2nd_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/69832126641.pdfIn PDF document text
    • https://s3.amazonaws.com/fasudikek/good_news_translation.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/ruleluxemodupex.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/motorola_xpr_6550_bluetooth_mic.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d4f30a83-8a42-477e-bf57-395540a3701b/rare_genetic_disorders_in_toddlers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6943b40f-de58-4af1-8dde-78514cd9d330/51513696236.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/cccam_2._0._11_ipk.pdfIn PDF document text
    • https://s3.amazonaws.com/rivazixexuguri/archives_of_virology_brief_report.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_off0000d852.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD852 5552 bytes
SHA-256: 530029acca22a184a76a857a08ac0abe4ce2f28eb2ddc9f85f6c9a9a843c5ae1
font_01_sfnt_off0000eb22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB22 10984 bytes
SHA-256: 66298ebe1e019ba64b2c196af0fbe5ac7874f53b1922e330cd6266ed6857ab61

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