Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcf822ce70e8b3fe…

MALICIOUS

PDF

82.9 KB Created: 2021-03-18 19:34:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 88c7f072de0a5f64f89ecdceb03db40c SHA-1: b4910aba51628a22df81570e616dd0316dd5ddac SHA-256: dcf822ce70e8b3fe87b1b42bfb15a737e9200d4fc97f5375298d80449cba3c0f
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains embedded URLs pointing to suspicious domains, suggesting a phishing or malware distribution attempt. The PDF structure and embedded content indicate it's likely a lure to direct users to malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/123?utm_term=free+answering+wh-+questions+worksheets
    • http://kawasus.scienceontheweb.net/what_is_perception_of_color.pdf
    • https://cdn.sqhk.co/lisupixiwe/hhJjePQ/robizanevege.pdf
    • http://sovumeriwox.mygamesonline.org/7141835215.pdf
    • http://sutivetowit.mypressonline.com/39072814859.pdf
    • http://najetaxu.mygamesonline.org/47989893115.pdf
    • https://cdn.sqhk.co/mewivupa/gctprcC/47605953933.pdf
    • https://cdn.sqhk.co/kovajivika/iaghMR5/answering_machine_messages.pdf
    • https://cdn.sqhk.co/fusojafiza/hhHS8jh/towukavebuli.pdf
    • https://cdn.sqhk.co/nodezaneripe/S5hdchj/carson_wentz_news_update.pdf
    • https://cdn.sqhk.co/nupumusu/Ggfhigi/81781160601.pdf
    • http://jotitojimo.mygamesonline.org/emotional_freedom_technique_for_dummies_download.pdf
    • http://kurametugugu.mygamesonline.org/55984532857.pdf
    • https://cdn.sqhk.co/gupimupiset/ialehha/zojetivuxaxeretupi.pdf
    • http://sadinexiwa.mygamesonline.org/30596841499.pdf
    • http://kusafomidufe.mywebcommunity.org/what_age_group_is_pippi_longstocking_for.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://sopavame.onlinewebshop.net/acca_f9_kaplan_exam_kit_free_download.pdf
    • http://nufiwimuzobo.onlinewebshop.net/electrical_engineering_basics_free_download.pdf
    • https://s3.amazonaws.com/tutasujal/10180800966.pdf
    • http://gutekuretejapoj.onlinewebshop.net/45834650668.pdf
    • http://mobukug.myartsonline.com/33796632924.pdf
    • https://s3.amazonaws.com/lixasifasi/51835275506.pdf
    • http://kebenubes.onlinewebshop.net/mukuluzeturunupap.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f9c6.bin
773848eb66033399426fcc8c5c0190ebcfe2547571bf572f713e0e7369fac0f1
pdf-font-stream PDF embedded font (sfnt) at offset 0xF9C6 5068 bytes
font_01_sfnt_off00010b11.bin
c746243370ca1c18e093bc146fa403939005e61d6c948c4db533878495be9bea
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B11 10816 bytes
font_02_sfnt_off0001300c.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f
pdf-font-stream PDF embedded font (sfnt) at offset 0x1300C 4324 bytes