Malicious PDF — malware analysis report

Static analysis result for SHA-256 74d38040f23a17fd…

MALICIOUS

PDF

70.0 KB Created: 2021-03-28 05:53:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32fa41a1031ff909938b2c3320684184 SHA-1: 4166b96eef21c9b70be8470a69ab9406481b9094 SHA-256: 74d38040f23a17fdf725ca6463830dff8f405c0c8c619392c2bbe94d5265ca2f
96 Risk Score

Malware Insights

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

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The embedded URL and numerous other URLs point to external resources, suggesting the document is designed to redirect users to malicious sites for phishing or malware delivery. The document body, though heavily obfuscated, contains keywords related to a product, which is a common lure for such campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://midufefew.ru/award?keyword=trohestar+wireless+barcode+scanner+1d+2d+qr+pdf417
    • http://fijubigatusurov.scienceontheweb.net/71720819732.pdf
    • http://lakujalinifibo.mypressonline.com/butterfly_kisses_book.pdf
    • http://zoluwofemofuper.sportsontheweb.net/80432948050.pdf
    • https://sebupemisopuba.weebly.com/uploads/1/3/4/7/134706320/5548206.pdf
    • http://logvoz.ru/how_to_open_sharp_ac_remote0lwub.pdf
    • http://like-store.site/galanefefumegul829ql.pdf
    • http://navalny.design/python_basic_authentication_encodewf4pg.pdf
    • http://mmeueue.space/what_is_the_difference_between_oracle_18c_and_19cfs0nt.pdf
    • https://cdn-cms.f-static.net/uploads/4447251/normal_604e3e151ffa1.pdf
    • https://cdn-cms.f-static.net/uploads/4452173/normal_5fd8497799684.pdf
    • http://fefiwizam.sportsontheweb.net/building_construction_management.pdf
    • https://ritukananikunid.weebly.com/uploads/1/3/0/9/130969552/611189.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://30d6ba4c-d201-4e26-8f31-a0e059b28788.filesusr.com/ugd/f9b8bb_70b87487ae1f47868ffa75d53cb1a647.pdf?index=true
    • http://lowuguja.myartsonline.com/voxumi.pdf
    • https://6e8b94c7-278c-4a65-9c30-8d61c93a8f31.filesusr.com/ugd/9ff9b8_a6bd19b8dbe94c5aab358b0363f80436.pdf?index=true
    • http://jurizamumi.myartsonline.com/73055212418.pdf
    • https://dae57379-2785-4108-a223-4562ecbfc22e.filesusr.com/ugd/87ad98_ff0ca88036e34115b1b9cb3561fd3727.pdf?index=true
    • https://56148a0a-83a3-4003-94ff-78d3044b7c00.filesusr.com/ugd/6f5f23_68ffb1ac5f7d40bb9fda2d3bfe776715.pdf?index=true
    • 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_off0000d0c2.bin
4074b9860795fff8693577556cfb4e4ebe18718ef95006ef695c01fc8bdd64cf
pdf-font-stream PDF embedded font (sfnt) at offset 0xD0C2 5904 bytes
font_01_sfnt_off0000e4ee.bin
770e35c4a5d24372af0f84a1151a63d7fe2f9ec27c69b665c751bc1243edb77f
pdf-font-stream PDF embedded font (sfnt) at offset 0xE4EE 10744 bytes