Malicious PDF — malware analysis report

Static analysis result for SHA-256 c114c2cb630f1cda…

MALICIOUS

PDF

82.3 KB Created: 2021-03-01 09:45:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: c3f2a8bf2459f3e0f7182995d819fc54 SHA-1: 9687f0aad42381a080c65b2d8dba42d55ad48c09 SHA-256: c114c2cb630f1cdac6754425a2f7e55a5ab9182540bfa97804650e491c25950c
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://crophysi.ru/strik?utm_term=how+does+propane+auto+changeover+work PDF link annotation
    • http://questotzvezd.space/tarihi_evre_koruma_ve_restorasyonwdbkd.pdfIn PDF document text
    • https://lodokevez.weebly.com/uploads/1/3/4/4/134476034/wamunizidasiwe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454971/normal_5feafaf756db5.pdfIn PDF document text
    • http://dosubodanes.mypressonline.com/72414905480.pdfIn PDF document text
    • https://tobadagagu.weebly.com/uploads/1/3/4/7/134750152/6117266.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413473/normal_5ff1fb05037cd.pdfIn PDF document text
    • https://xajapeni.weebly.com/uploads/1/3/4/3/134341300/manavusojuku-nogenoxa-sawerevuk-sisumo.pdfIn PDF document text
    • https://jokoturatel.weebly.com/uploads/1/3/5/9/135993825/906c8.pdfIn PDF document text
    • http://xawegap.mywebcommunity.org/48274241325.pdfIn PDF document text
    • http://damvglaz2.xyz/24235697591uog3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393628/normal_5fe6cde58a91d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491925/normal_5ff8c3d09ef19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409393/normal_60115fc0b0887.pdfIn PDF document text
    • https://xifisipur.weebly.com/uploads/1/3/1/0/131069870/wolubeludemazabad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464700/normal_5fddcfb228ccf.pdfIn PDF document text
    • https://jifurutirijiguj.weebly.com/uploads/1/3/4/5/134528482/bded3f5d5069b1.pdfIn PDF document text
    • http://rixorevu.getenjoyment.net/machine_learning_with_python_ibm_coursera_quiz_answers_github.pdfIn PDF document text
    • https://joxeluduxena.weebly.com/uploads/1/3/4/7/134772203/5046089.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369512/normal_5febd18ce0978.pdfIn PDF document text
    • http://hermidkovo.info/daxuri6vez7.pdfIn PDF document text
    • http://topuniversityru.fun/rene_descartes_meditations80wy1.pdfIn PDF document text
    • https://girawosanisab.weebly.com/uploads/1/3/0/7/130740609/nubuka-zodif-mojureketoguwer-zoruto.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482426/normal_6019860fc453c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f7a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF7A8 5312 bytes
SHA-256: 91b6d637cc474fca7515d4083c471c867ad1f5f11b8b2cae048ff24d08f9afd7
font_01_sfnt_off000109c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C4 10564 bytes
SHA-256: 2eaaf961f3c581d0350ed0b5b2c0d0e4ce3f666b952cf5fb954d1136f373b160
font_02_sfnt_off00012d99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D99 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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