Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d90cc5d26e7be97…

MALICIOUS

PDF

67.4 KB Created: 2021-03-17 03:31:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 016000667347d1fd9a0bf96769705601 SHA-1: b0c30b093a26d1cc4682ac191ba62ecb1d920a0d SHA-256: 9d90cc5d26e7be9701dd1eb6d68f6fbfc8fbe1b595a70a8d0b41c602588cafc1
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, indicating malicious intent. It contains a large number of external links, suggesting a link farm or phishing attempt. The primary URL, https://xezojetit.ru/wix?keyword=burlington+township+schools+calendar, appears to be a lure to a malicious site. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://xezojetit.ru/wix?keyword=burlington+township+schools+calendar
    • https://cdn.sqhk.co/zuronenom/2fxpBjg/sagawurowaliwupajiji.pdf
    • https://rajepejejema.weebly.com/uploads/1/3/4/8/134860913/girixigibuxepowiko.pdf
    • https://kazerefe.weebly.com/uploads/1/3/1/0/131070627/7728257.pdf
    • http://wizalokejova.iblogger.org/51443063385.pdf
    • https://poxobavu.weebly.com/uploads/1/3/1/4/131453713/9c128d52977e.pdf
    • https://belinadojo.weebly.com/uploads/1/3/1/6/131607131/malaxinox.pdf
    • https://static.s123-cdn-static.com/uploads/4370072/normal_5febb7a54fd42.pdf
    • https://kuludiliwalu.weebly.com/uploads/1/3/4/4/134484861/lefupifowarer.pdf
    • https://static.s123-cdn-static.com/uploads/4384480/normal_5fde392c7222d.pdf
    • https://cdn-cms.f-static.net/uploads/4486213/normal_603b096abcf37.pdf
    • https://cdn-cms.f-static.net/uploads/4368976/normal_60258e21642ff.pdf
    • https://cdn.sqhk.co/popenewosaso/gBthgne/topuwedarojubijamujekonoz.pdf
    • https://levalezekavazif.weebly.com/uploads/1/3/4/6/134639406/60be23f.pdf
    • https://nedetuvozuwe.weebly.com/uploads/1/3/4/6/134699612/7050411.pdf
    • https://cdn-cms.f-static.net/uploads/4460723/normal_6012374370790.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://todizegi.epizy.com/what_does_operational_readiness_mean.pdf
    • https://uploads.strikinglycdn.com/files/bde02408-ac46-4e0c-a5eb-1a96797b1d5a/21515978458.pdf
    • https://uploads.strikinglycdn.com/files/2b224b8b-75f9-416a-aeef-45952d4af3bc/simile_worksheet_2.pdf
    • https://uploads.strikinglycdn.com/files/e1ad56ff-1b30-44e8-864b-56547f50c313/10341705007.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_off0000ca70.bin
b2b1d96c91fcf48598d1454b99104d5f0fc8ab0e71af62c9b91a02f14456abfb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xCA70 5476 bytes
font_01_sfnt_off0000dd1c.bin
fbaebe5c0c84d0f362279ef6e2e727765b4358601d8ee318bd1fe9763857f483		 pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1C 10312 bytes

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