Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a01fed67b5c9bd4…

MALICIOUS

PDF

73.7 KB Created: 2021-02-12 02:50:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: f71472e1b78f1278a85b4c6c4e6b205a SHA-1: 39ffba4010957777c9a56411f1bcda60958db18b SHA-256: 2a01fed67b5c9bd4545830966842144001d18ee377c81e7875cf83ae162e405e
164 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a link farm and has been flagged by a machine learning classifier as malicious. It also contains a ClamAV detection signature for 'Pdf.Phishing.Trojan'. The embedded URL points to a site that appears to be related to resume templates, suggesting a social engineering lure. No scripts were extracted, but the presence of multiple external links and the ML/ClamAV detections strongly suggest a malicious intent to redirect the user to a harmful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://seumenha.ru/wb?keyword=chronological%20resume%20template%202019 PDF link annotation
    • https://bidiruvinevuf.weebly.com/uploads/1/3/1/3/131379477/nakuwok_nobaderimed_liwuzas_zusat.pdfIn PDF document text
    • http://watutuwox.iblogger.org/37810512564.pdfIn PDF document text
    • https://tovumanaxi.weebly.com/uploads/1/3/5/3/135392352/2071919.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_6012f9816a3b6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470207/normal_5fc6cfd96f4a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409118/normal_6023d5a6a0e5b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488329/normal_5ff06c7d36e31.pdfIn PDF document text
    • https://bifotuvimutojuz.weebly.com/uploads/1/3/0/9/130969437/boxiwizegago.pdfIn PDF document text
    • https://vonorakukipi.weebly.com/uploads/1/3/4/7/134721252/xenelazeta.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382770/normal_6006f7d69b943.pdfIn PDF document text
    • http://murerejomijuv.22web.org/13124711426.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mogipegi/human_resource_management_journal_author_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/dusubonifu/kindle_book_reader_app_android.pdfIn PDF document text
    • https://s3.amazonaws.com/didowugorokirug/wolavuxudurakiniv.pdfIn PDF document text
    • https://s3.amazonaws.com/kujapomib/numogesawexagag.pdfIn PDF document text
    • https://s3.amazonaws.com/wivunonovef/84143625756.pdfIn PDF document text
    • http://gimemos.epizy.com/48416877208.pdfIn PDF document text
    • http://gigitepusiligo.epizy.com/worowitudikizopido.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_off0000e0f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0F9 5736 bytes
SHA-256: d6662434b8a5ac7ab564f65cd8c905efe76ec1ab449b7178486dcd07e7a1b114
font_01_sfnt_off0000f453.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF453 10912 bytes
SHA-256: 5ef71821224e0d0da8db407daf7bfa0d232159b8b3e6db5e9e7d8d97cd3a3504

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