Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac2e17af46b04d4c…

MALICIOUS

PDF

67.1 KB Created: 2021-04-21 13:10:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 61160f7d2096b4c2d26f059361106e5b SHA-1: 53301111dc5a3e5a3a2e9c5f784fe18cb75de92f SHA-256: ac2e17af46b04d4cc2192d8ab47daddd5598a5bc1a9aea83cd2a10df720f8924
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 0.9996

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://xezojetit.ru/strik?utm_term=math+destroyer+vs+real+dat PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366031/normal_603fe35e918c7.pdfIn PDF document text
    • http://zekabivalejasaj.22web.org/potenizawujurokegofaledi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367646/normal_5fcf1d5fc839c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489411/normal_60666c434386e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4467273/normal_6004e78a3c37d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491725/normal_60090243027c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393521/normal_5ff7ee8f1cace.pdfIn PDF document text
    • https://vigajinid.weebly.com/uploads/1/3/4/8/134889024/lexekogimileselomi.pdfIn PDF document text
    • https://lijipowurop.weebly.com/uploads/1/3/4/3/134314174/85d77575a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474220/normal_6066a49c6a930.pdfIn PDF document text
    • http://tevajevidiwa.22web.org/asymptote_cours.pdfIn PDF document text
    • http://fugoverud.iblogger.org/pearson_longman_keystone_d_workbook_answers.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374185/normal_60446c57a9de4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383156/normal_5fc62d0754770.pdfIn PDF document text
    • http://ziwerero.iblogger.org/82876767474.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413242/normal_5ffd82f029312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367279/normal_600a5cab6ba05.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365613/normal_5fddfb98a416e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://forawoxo.epizy.com/bose_quietcomfort_25_android_apple_unterschied.pdfIn PDF document text
    • http://folevibowabo.rf.gd/kaxulirowidowoxaf.pdfIn PDF document text
    • http://webataj.epizy.com/dafozananiwerepot.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_off0000ccc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCC2 5080 bytes
SHA-256: 998f12c90ca781d36c3b057bee7ecae697d96a46f8911add5fef402801fe8540
font_01_sfnt_off0000de19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE19 9668 bytes
SHA-256: 45e73435b95603626c3cd9070529fff523e4065ceb665aa31ab8a0632ff2d922

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