Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0ebf1fa1da34b91…

MALICIOUS

PDF

98.7 KB Created: 2021-04-06 10:08:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: 1ad4853c1fe406ca9414f3491896cc06 SHA-1: b6da864a769c32b6753e802bb2762c61a2af9503 SHA-256: d0ebf1fa1da34b91f416ceeb102074eb6b8d8a3cf88e5f16c89574141589dc59
104 Risk Score

Malware Insights

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

The file is a PDF document that contains an embedded URI pointing to a suspicious URL, identified by ML classifiers and ClamAV as malicious. The presence of a 'Download Button' heuristic suggests a social engineering attempt to trick the user into downloading further malicious content. Although no scripts were explicitly extracted, the PDF structure and the detected maliciousness indicate a phishing or malware delivery attempt, likely via spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://pelibifir.ru/award?keyword=bengali+letter+book+pdf PDF link annotation
    • http://trendmobile.ru/39082426050vgvfj.pdfIn PDF document text
    • http://gipeturira.22web.org/kitchenaid_kdfe104dbl2_manual.pdfIn PDF document text
    • http://sdfafq.info/brackets_punctuation_worksheetiiqye.pdfIn PDF document text
    • http://chistohome.moscow/graco_snugride_30_assembly_instructionsq79g9.pdfIn PDF document text
    • http://rafewasugajeze.22web.org/how_much_does_a_physicist_earn_uk.pdfIn PDF document text
    • http://xekusevaguviz.iblogger.org/78680885538.pdfIn PDF document text
    • http://tanuwoxomasosog.22web.org/44259591333.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/vaxebisapesi/harga_casio_illuminator_ae_1000w.pdfIn PDF document text
    • http://lezezukoxe.epizy.com/foluxanokogatilonariru.pdfIn PDF document text
    • https://e97408dc-4b05-4e3b-9f19-f4127feb49ef.filesusr.com/ugd/a42eed_e0bbd176ca514f0483ef492762ea86c0.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/kiremefegonar/64877987212.pdfIn PDF document text
    • http://jidusepagezet.epizy.com/axial_scx10_2.pdfIn PDF document text
    • http://kanisal.epizy.com/mqtt_broker_windows_10.pdfIn PDF document text
    • https://23fe9111-5aa3-4288-b7a4-a84c242bb647.filesusr.com/ugd/d35b85_d993c11f93aa4aa3a78a76c3efc0262d.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/getizar/javascript_file_path_relative.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/bleacher_report_real_madrid_liverpool.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/38820767045.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
    • http://www.geocities.com/mitra_anirban/hobbies.htmGNUIn PDF document text
    • http://www.gnu.org/copyleft/gpl.htmRegularIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f34d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF34D 5284 bytes
SHA-256: cfd4623f4321a4e0f6c803d6a122c829ef72b814343af402dac83bc3cd33b781
font_01_sfnt_off00010553.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10553 16408 bytes
SHA-256: 992553fa8ed7fce1385c5f74a3c4c85a71ee185fb464cdaf70d0bcaf4752a399
font_02_sfnt_off00013475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13475 2212 bytes
SHA-256: d8dc87f62386ad6ff58b19e3e23681cec1a297ba98e3c5ea67be0feb9b59df6d
font_03_sfnt_off00013e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E8F 11384 bytes
SHA-256: e5b65578ff20eb8e0b88927fdea5ed4c9380abd1134ae27189568438c119a737
font_04_sfnt_off00016593.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16593 16276 bytes
SHA-256: 046ec6c2f55833959fc2261e8711f6983dc6042179e4c1fcac49974c2bdada69

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