Malicious PDF — malware analysis report

Static analysis result for SHA-256 15fecb092f58288d…

MALICIOUS

PDF

89.5 KB Created: 2021-03-21 22:05:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: f0de2eec6f7615d7cef8926ac6f804eb SHA-1: d5beece879b7304250ec952253b6fccc79a0ee3d SHA-256: 15fecb092f58288d2276107d50fc10f8ae825179859674c52f8dbb6a968029cd
156 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ML classifiers and ClamAV. It contains a large number of external links, including a "link farm" designed to manipulate search engine results, and a lure related to "Power rangers dino thunder episode guide". The presence of embedded JavaScript, though obfuscated, suggests an attempt to execute malicious code or redirect users to further malicious sites. The primary attack pattern involves luring users to external, potentially malicious, web pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/wix?keyword=power+rangers+dino+thunder+episode+guide
    • https://lovevupadu.weebly.com/uploads/1/3/5/3/135328586/6376497.pdf
    • https://cdn-cms.f-static.net/uploads/4389616/normal_600ef6a4e8136.pdf
    • https://cdn-cms.f-static.net/uploads/4416302/normal_602966b255810.pdf
    • https://nonibebufixaz.weebly.com/uploads/1/3/2/6/132682934/gigobivolikigig_laduzuxulobutir_xumidutika.pdf
    • https://tedudizoz.weebly.com/uploads/1/3/2/6/132683188/dewanonasipeni.pdf
    • https://dapodufez.weebly.com/uploads/1/3/3/9/133997146/beterefofinikiv-nirobexuzipowu-bimutuxoj-kuxowupodokomiz.pdf
    • https://cdn-cms.f-static.net/uploads/4410459/normal_600c092deec19.pdf
    • https://linajijokib.weebly.com/uploads/1/3/4/0/134000065/dikeloxirofoti_fisafagokon_zarelov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://c69a8150-bb1e-4c46-878b-fc1622391bd7.filesusr.com/ugd/cf91d6_958b66e4b4104cca977f29d6701400c1.pdf?index=true
    • https://uploads.strikinglycdn.com/files/e3fa1fb6-498f-4b26-9429-d97b0cb579b5/59740283891.pdf
    • http://zidibivitu.epizy.com/vaxufalazawoxifikisokagol.pdf
    • https://288c7b4b-0494-48f6-8ee2-9dd519b96b0a.filesusr.com/ugd/a107db_f4e439c617244460951068c45470a1fe.pdf?index=true
    • http://fejobizife.epizy.com/33300944291.pdf
    • http://kebowikosu.epizy.com/remington_11-87_synthetic_stock_20_gauge.pdf
    • http://zekesegokaso.rf.gd/58554945232.pdf
    • http://fonumorawupako.epizy.com/19494504140.pdf
    • https://d5bea983-5bca-41ba-aae6-6b688785cc77.filesusr.com/ugd/9ec29b_24bcd910321340e7a2f088149ad5fa92.pdf?index=true
    • https://uploads.strikinglycdn.com/files/93fd6e6c-9061-495a-a397-df5e281bf64f/why_did_we_have_an_american_revolution.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011324.bin
114ef55d05ebe96f2dc3730cceb2dcb49fcef52c4e1fafa5362e7588ff4ee593		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11324 5164 bytes
font_01_sfnt_off000124b4.bin
d326b92f60d5fbd0410566eb118f3f17a94ec6fbeefdc5a37841dae5652cdddd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x124B4 10940 bytes
font_02_sfnt_off00014a09.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14A09 4324 bytes

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