Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd385cb682c83e47…

MALICIOUS

PDF

77.8 KB Created: 2021-05-02 10:32:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: e5ae5138ed5d15cd05155e10d5003597 SHA-1: 677626deee5379488765ed60b4c8db8441046380 SHA-256: fd385cb682c83e47b6ae66243c1acf1d6739ecc52e3de91c00f0a7d134419abc
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, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'ponafet.ru', which is likely used to deliver a secondary payload or redirect the user to a phishing site. The document body, though heavily obfuscated, contains references to 'Vizio sound bar remote bluetooth', suggesting a lure to entice users to click the malicious link.

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://ponafet.ru/strik?utm_term=vizio+sound+bar+remote+bluetooth
    • https://static.s123-cdn-static.com/uploads/4368970/normal_5fe3ac775a562.pdf
    • http://labiluwewinedu.22web.org/singh_is_bling_film_full_hd.pdf
    • http://alisabor.design/wetirazumip508pm.pdf
    • https://cdn-cms.f-static.net/uploads/4420441/normal_6015c90acf532.pdf
    • https://cdn-cms.f-static.net/uploads/4487905/normal_606e6236a28e3.pdf
    • https://cdn.sqhk.co/simikitivo/0ij7nji/paintball_guns_ebay_australia.pdf
    • http://bexowobiminefi.mywebcommunity.org/biology_grade_7.pdf
    • http://avto-trokot.xyz/18625199206me00i.pdf
    • https://cdn.sqhk.co/lotidonita/jeiaigQ/74546073281.pdf
    • https://cdn-cms.f-static.net/uploads/4417207/normal_60180dfaa5765.pdf
    • https://static.s123-cdn-static.com/uploads/4476566/normal_5fcd3114669bf.pdf
    • http://zenezadeso.22web.org/beginners_russian_textbook.pdf
    • http://carins.info/lyerla_sheet_metal_heating_air_conditioningrk3rt.pdf
    • https://static.s123-cdn-static.com/uploads/4385848/normal_5ff4318530410.pdf
    • https://cdn-cms.f-static.net/uploads/4383913/normal_6022ad9faeda4.pdf
    • https://cdn.sqhk.co/tiwefuxab/iaurQl7/voxosonixefunemen.pdf
    • http://shopwithsale.website/badiou_in_praise_of_loveggfa7.pdf
    • http://sdfafq.info/sunbeam_electric_blanket_controlleraj6el.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://nixomirorubu.myartsonline.com/2000_ford_ranger_xlt_3.0_specs.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_off0000f409.bin
c41f98e2b7719a7a6fc44166d173b19eb02fb4ecda65e64fae73c538d0ab69c7
pdf-font-stream PDF embedded font (sfnt) at offset 0xF409 5220 bytes
font_01_sfnt_off0001059f.bin
9b7129bad1386f90d4e3953b2682036fc6db1493a78a40b3e65243335fe36ade
pdf-font-stream PDF embedded font (sfnt) at offset 0x1059F 10760 bytes