Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b475f4d2ad60eb0…

MALICIOUS

PDF

75.2 KB Created: 2021-05-02 06:44:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: d04ff04c4e90533d6bd0d7c92038fef2 SHA-1: d3e8db9e039644673534ae278b8159dd2414d235 SHA-256: 1b475f4d2ad60eb01f87d1cfd26cb7e8d8704f70481f5def310119c5335f1fb8
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely for malicious purposes. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to trick the user into navigating to a potentially harmful website.

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://nipisod.ru/strik?utm_term=bible+contradictions+answered+pdf
    • https://cdn.sqhk.co/numokafas/jjL2jik/33780169480.pdf
    • https://vakurizilobiwil.weebly.com/uploads/1/3/0/9/130969742/ritokifafotuza-sanazubew.pdf
    • https://cdn-cms.f-static.net/uploads/4458145/normal_600bb35d98ce4.pdf
    • https://static.s123-cdn-static.com/uploads/4406473/normal_6000bc7307811.pdf
    • http://zisilusekaxe.22web.org/jarotokowivomejo.pdf
    • https://gikudinok.weebly.com/uploads/1/3/4/7/134730402/ed8aee28.pdf
    • https://static.s123-cdn-static.com/uploads/4426408/normal_5fcb2cfccf4a2.pdf
    • https://cdn-cms.f-static.net/uploads/4369788/normal_60480c582de5b.pdf
    • https://jopokiwajisi.weebly.com/uploads/1/3/4/1/134108554/pomizepopewa-wimedagasuli.pdf
    • https://cdn.sqhk.co/rixutixim/hbhjhdY/playroom_rug_large.pdf
    • https://cdn.sqhk.co/vijukifezu/ighbVX5/sasobavo.pdf
    • https://cdn.sqhk.co/ruzewekafan/jEG9uJD/naa_movies_free_telugu.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://54957a25-093b-4cbd-a4f0-8eb5fea931f0.filesusr.com/ugd/8ba634_ebe7f7ecbc2a4859ae51b2e277291582.pdf?index=true
    • https://99470c7d-c692-4648-a7b8-36ea19db2883.filesusr.com/ugd/ab059d_11462749871d4277a24b73fbfd2e323c.pdf?index=true
    • http://zenejifawulo.epizy.com/excel_financial_functions_list.pdf
    • http://povokodum.rf.gd/549232617.pdf
    • http://zokudubogot.epizy.com/pezirojugowo.pdf
    • http://fufibilola.epizy.com/free_printable_worksheets_for_elementary_school.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_off0000e80f.bin
20d957a90ff49fb750bb30f7f2db48d2c4f85e1d34c2984f5eaf3037a1d13dbe
pdf-font-stream PDF embedded font (sfnt) at offset 0xE80F 5432 bytes
font_01_sfnt_off0000faa6.bin
d714ac05c325cb6323ded21110b14dfe4c3bb026bfbea2fa241e7529f89a9225
pdf-font-stream PDF embedded font (sfnt) at offset 0xFAA6 10396 bytes