Malicious PDF — malware analysis report

Static analysis result for SHA-256 cda5b2670c47fbc6…

MALICIOUS

PDF

223.2 KB Created: 2021-06-01 04:21:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 5bfcb35ef34c26ab4a0e69924ceb89b5 SHA-1: 5eeddba02b0f558780bb4376693adf4d8d7dedd8 SHA-256: cda5b2670c47fbc65db78b59225271f69336a09b684c363f3a74c715c2dc62ed
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, suggesting it's used to redirect users to a malicious site. The document body, though heavily obfuscated, contains metadata that aligns with the PDF structure and the detected malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9950

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://pelibifir.ru/123?utm_term=black+butterfly+darkey+song PDF link annotation
    • https://gisijenoxumo.weebly.com/uploads/1/3/1/4/131437849/jemoduxuwibi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374839/normal_5fcf4f0519f0c.pdfIn PDF document text
    • https://nejonuresuf.weebly.com/uploads/1/3/4/8/134897458/wokizopupiwizolud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471710/normal_604e5caa11c29.pdfIn PDF document text
    • https://lovapunosarimol.weebly.com/uploads/1/3/5/4/135401421/5700058.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4414153/normal_60b1f1ac019a4.pdfIn PDF document text
    • https://tawusizigegik.weebly.com/uploads/1/3/3/9/133997505/56a76a19cedf135.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4498882/normal_603a85bfa949d.pdfIn PDF document text
    • https://xekanowodupap.weebly.com/uploads/1/3/0/7/130739303/sagomixosepepik.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426942/normal_60297a7a3aea4.pdfIn PDF document text
    • https://mojipolizu.weebly.com/uploads/1/3/4/3/134318612/jedewawekinik-pegalipez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422894/normal_5fdd633d5fc5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456671/normal_6068c0e7b8588.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://poforezufovu.pbworks.com/f/what_herbal_essences_shampoo_is_best.pdfIn PDF document text
    • http://sepaxebi.pbworks.com/f/is_react_more_popular_than_angular.pdfIn PDF document text
    • http://lekuzax.pbworks.com/w/file/fetch/144417774/vibusarozemuxi.pdfIn PDF document text
    • http://fuvesiwowegu.pbworks.com/f/supax.pdfIn PDF document text
    • http://viluxese.pbworks.com/w/file/fetch/144415620/48180074782.pdfIn PDF document text
    • http://negovijalulu.pbworks.com/w/file/fetch/144418512/32413960523.pdfIn PDF document text
    • http://palixazoke.pbworks.com/f/why_will_my_pellet_stove_not_light.pdfIn PDF document text
    • http://funinupun.pbworks.com/f/airplay_app_android_tv_box.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_off0003358a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3358A 5544 bytes
SHA-256: 5fceb9c1bcfee1f20b494e149dc60bf63b66e023f414734c0ad7ed083f059748
font_01_sfnt_off00034881.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34881 10620 bytes
SHA-256: f54e1bd463aadd5dd03cca8e4a1d3e6cdee00dc86054c846f4214b0aa1964b50

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