Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd927c72f1596855…

MALICIOUS

PDF

87.5 KB Created: 2021-02-23 07:39:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: ef7728e6bb1e840add17c587707ee97b SHA-1: b9ba8602448be23d8aacadf1696c40462aa12b81 SHA-256: bd927c72f159685543f448bbbd9ac55566cfcc875c08ffab484d1e7f24e7a38b
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 URL that likely serves as a lure to a malicious domain. The document body, though heavily obfuscated, contains text that appears to be a title or theme for the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://maypoin.ru/wix?keyword=la+luna+sangre+july+13+2019 PDF link annotation
    • https://cdn.sqhk.co/wevavagu/jiz8Zdq/kudoxiramuwuk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380522/normal_5ff71199af353.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388160/normal_5fcf2164e51e6.pdfIn PDF document text
    • https://cdn.sqhk.co/sewujuzanas/a4JijRE/the_sims_mobile_hack_ios_app.pdfIn PDF document text
    • https://cdn.sqhk.co/ranemagesoga/NFEShh2/katalozamowawoxejaxokas.pdfIn PDF document text
    • http://sodalabs.club/duxikipeseguw1k67.pdfIn PDF document text
    • https://cdn.sqhk.co/nixenexax/haPNbty/soccer_demonstration_speech.pdfIn PDF document text
    • https://cdn.sqhk.co/rirerujel/3ififTl/ninja_hero_turtles_runtime.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406775/normal_600a4608d90a2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404514/normal_5fd3770f49c9a.pdfIn PDF document text
    • http://markettop.pro/family_tree_chart_genealogyxez0v.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/jujojomojemiz/zogazowalovabupijegopat.pdfIn PDF document text
    • https://s3.amazonaws.com/wuxupewu/ajax_post_file_formdata.pdfIn PDF document text
    • https://s3.amazonaws.com/wulotugadag/aramark_uniform_services_corporate_office.pdfIn PDF document text
    • http://pikawin.rf.gd/86033182785.pdfIn PDF document text
    • https://s3.amazonaws.com/wifukedot/lotatol.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_off000119f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x119F3 5620 bytes
SHA-256: e8d933f4bbec9c443092721d7ccae07eddcc39579e2bfbe49c4bc772dcca5b5e
font_01_sfnt_off00012d27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D27 10476 bytes
SHA-256: 4fbe68203d867e261c336a2dfb2f5949cbfba607a70c8f24e689de82d2257995