Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c028a8adbc8193e…

MALICIOUS

PDF

75.8 KB Created: 2021-02-16 17:29:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 2c970e83cbac858c0af0310711799088 SHA-1: b3ee7f03597067c863a46b0b424ed623c71cea2d SHA-256: 2c028a8adbc8193e398254e4eaebcf25343050523280b5f704c4c692799ffd96
156 Risk Score

Malware Insights

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

The PDF file contains numerous external links, with one prominent URL pointing to a search result for a car. This suggests a phishing or link-farming attempt to redirect users to potentially malicious websites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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://baarspo.ru/wb?keyword=ford%20mustang%20shelby%20gt500%20for%20sale%20in%20south%20africa PDF link annotation
    • https://risegexof.weebly.com/uploads/1/3/4/6/134661868/goroge-sunedi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502464/normal_5fee69881bf7d.pdfIn PDF document text
    • https://tevaxuxelajuri.weebly.com/uploads/1/3/2/7/132712575/biluluwez_toxinetigew_zefik_vafevusinu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443617/normal_5fccb507079a8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502268/normal_5fe382b4a998f.pdfIn PDF document text
    • http://verezitabel.66ghz.com/celulares_android_baratos_telcel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455669/normal_60210be422fe5.pdfIn PDF document text
    • https://bekiwoxutoga.weebly.com/uploads/1/3/2/7/132712348/lenorut_mafuwarupatixe_texofakumab.pdfIn PDF document text
    • https://rizomoxus.weebly.com/uploads/1/3/4/5/134589692/773547.pdfIn PDF document text
    • https://rojofasefimo.weebly.com/uploads/1/3/1/6/131636828/zipefakok.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4466386/normal_5fdd9409498a3.pdfIn PDF document text
    • https://japejezapunat.weebly.com/uploads/1/3/3/9/133999519/nukexo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450003/normal_5ff4fa693c719.pdfIn PDF document text
    • https://pivamuwonojazop.weebly.com/uploads/1/3/0/9/130969183/725a29541be.pdfIn PDF document text
    • https://xogofodaromaf.weebly.com/uploads/1/3/4/3/134387758/jusoxaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vanepozimor.rf.gd/rinetalesirer.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/6009456580.pdfIn PDF document text
    • https://s3.amazonaws.com/numunenoji/60598052083.pdfIn PDF document text
    • http://finubovuputok.epizy.com/bwv_974.pdfIn PDF document text
    • https://s3.amazonaws.com/zamuriza/pigolotufenafapaja.pdfIn PDF document text
    • http://fufibilola.epizy.com/18400739893.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE880 5900 bytes
SHA-256: bc22985b2d2dd1eed604d9106c1735f35519504193e01982187c00f0cc23ea1c
font_01_sfnt_off0000fc7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC7A 10912 bytes
SHA-256: 4656ecde25b0a4b130ec5d707d06a56279a1c5a423d11f6bc6e44da2e29572bc

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