Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dd4048cb25a71e9…

MALICIOUS

PDF

64.2 KB Created: 2021-03-17 19:19:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1870d122e883644692915ff787140ae0 SHA-1: 74449aa8b7a35b03e8365c157c8a5c375def0fd1 SHA-256: 1dd4048cb25a71e9ed037f5bd0ff3e1b9e3ac6cfc8bac811374b31646802dae0
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The presence of an external URI pointing to 'jumiwimov.ru' suggests a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jumiwimov.ru/123?utm_term=breathless+shayne+ward+video
    • http://strgb2.ru/grounding_guided_meditation_scriptf31we.pdf
    • http://ch-data-2a8fv9s.pw/sebopijifupuzusonotalerivkr9t1.pdf
    • https://zufiwesikewini.weebly.com/uploads/1/3/3/9/133997230/44c6294a.pdf
    • https://pavenepono.weebly.com/uploads/1/3/1/3/131383439/tazuvudifimis.pdf
    • https://genolawibiwiz.weebly.com/uploads/1/3/4/3/134316454/5952734.pdf
    • https://lifezudo.weebly.com/uploads/1/3/0/7/130739479/f8b1a2757b3.pdf
    • https://dexatasudawuge.weebly.com/uploads/1/3/4/4/134477966/4746156.pdf
    • https://kekofazejigax.weebly.com/uploads/1/3/4/6/134600595/lexavomogugafu.pdf
    • http://desokore.medianewsonline.com/evh_5150_iii_stealth_50_watt_review.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/e4f42ada-835e-4330-a224-609b1eb3e311/the_story_of_oj_lyrics.pdf
    • https://s3.amazonaws.com/tesapibebujep/panekuj.pdf
    • http://luxupuxud.myartsonline.com/what_are_the_top_va_disability_claims.pdf
    • https://uploads.strikinglycdn.com/files/4527d783-4199-432f-81c7-b804e6394567/36295112400.pdf
    • https://s3.amazonaws.com/dazovosugev/178009403.pdf
    • http://siniligavaxuvul.onlinewebshop.net/tarizubokonetowolerepu.pdf
    • https://s3.amazonaws.com/mawesenasijoser/describing_enlargements_worksheet_tes.pdf
    • https://uploads.strikinglycdn.com/files/7849733d-37e2-49ae-a7e4-38cfbd06b112/myers_briggs_work_compatibility_chart.pdf
    • http://wufagezigedo.onlinewebshop.net/xotaf.pdf
    • https://s3.amazonaws.com/baxegezivumi/aws_ad_connector_cloudformation.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0bd.bin
43cacf72bb3647162ea7a1a90ca2713da7d35ff0de001017999f56e29e6dae9e
pdf-font-stream PDF embedded font (sfnt) at offset 0xC0BD 5216 bytes
font_01_sfnt_off0000d28e.bin
58b0789f9f22fee9a63529f95d851a6df4c3e795f2c013e681e8d848b31162c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xD28E 9732 bytes