Malicious PDF — malware analysis report

Static analysis result for SHA-256 413a1c956b2c6c14…

MALICIOUS

PDF

76.1 KB Created: 2021-03-25 18:06:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 584f728290b1d7a82164d56aea9e59b2 SHA-1: de6a80c6363d802fab41e053a5e2847c5217eead SHA-256: 413a1c956b2c6c149c1ae992a3d9fd5b2766cdde4d3c15cf59f80b9397c1a469
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URL that directs users to a suspicious domain, likely for phishing or malware distribution. The document body, though heavily obfuscated, contains text related to a church and a PDF generation tool, suggesting a lure to disguise the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/wix?keyword=saint+francis+of+assisi+catholic+church+grapevine
    • https://cdn-cms.f-static.net/uploads/4491965/normal_605c6281ebc25.pdf
    • https://cdn-cms.f-static.net/uploads/4389080/normal_600b47bf33fd2.pdf
    • https://cdn-cms.f-static.net/uploads/4374022/normal_6046aff79569b.pdf
    • https://cdn-cms.f-static.net/uploads/4448992/normal_60417cb2f0b6d.pdf
    • http://katalog-siberian-force.online/hey_black_child_podcastrruj0.pdf
    • https://cdn.sqhk.co/jeforije/eRibCgi/87083757500.pdf
    • https://cdn.sqhk.co/liregevo/haghCq5/google_android_auto_alternative.pdf
    • https://static.s123-cdn-static.com/uploads/4485696/normal_60030c580ae66.pdf
    • https://cdn-cms.f-static.net/uploads/4447460/normal_6044ccb5e3ea6.pdf
    • http://smartroom.pro/the_12th_planet_book_downloaddt4f4.pdf
    • https://cdn-cms.f-static.net/uploads/4480898/normal_6040af4a89006.pdf
    • https://cdn-cms.f-static.net/uploads/4489244/normal_6014cc0461402.pdf
    • https://cdn-cms.f-static.net/uploads/4390051/normal_5fd63999c5399.pdf
    • https://static.s123-cdn-static.com/uploads/4477626/normal_5fe312a5c5073.pdf
    • http://moneyindia.site/abc_handwriting_worksheets_for_kindergartenhng0q.pdf
    • http://kellys.space/wipoxowusowimemafubupileqtn5b.pdf
    • https://static.s123-cdn-static.com/uploads/4451369/normal_5fee5394c62b2.pdf
    • https://cdn.sqhk.co/toxinize/ighbOM7/forest_rescue_bubble_pop_app.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/vobuturinivi/transformers_animated_arcee_toy.pdf
    • https://s3.amazonaws.com/pizivurapab/il_foreign_corporation_annual_report_instructions.pdf
    • https://s3.amazonaws.com/xulepiwa/49032967821.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_off0000e990.bin
c29476135e5ca3bda153c91b8d452ae1ac1b0e2578b897aa04b4428eb563bad5
pdf-font-stream PDF embedded font (sfnt) at offset 0xE990 5440 bytes
font_01_sfnt_off0000fc1c.bin
841f2341c7692fbd67b18b581abee85af5790c2fe81dd0f62299947ce28dc5bf
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC1C 11408 bytes