Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7d9fdca289bd79…

MALICIOUS

PDF

67.6 KB Created: 2020-11-23 19:06:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9fcaf7aa35f822ce4b9cf4ce4662d141 SHA-1: 925cfbcdfef7ad3389997a320734f841e064bcde SHA-256: 7d7d9fdca289bd797a1afd2d424b6746bc4413efe86cac3484d20d5803ab3794
214 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 and routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ggtraff.ru/strik?utm_term=blue+mountain+tv+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369916/normal_5f88592a1ecc6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404124/normal_5f9b95b496af3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447098/normal_5fa6e45394045.pdfIn PDF document text
    • https://xobowosesij.weebly.com/uploads/1/3/4/6/134616182/4395179.pdfIn PDF document text
    • https://zadumeredevasax.weebly.com/uploads/1/3/1/4/131453870/9069058.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4500883/normal_5fb7e500abb07.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
    • https://s3.amazonaws.com/mavixu/azonto_fuse_song.pdfIn PDF document text
    • https://s3.amazonaws.com/tirimofufemukat/case_animatronics_horror_game_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/persamaan_akuntansi_dasar.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzufexarevima/self_employment_income_statement_template.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/56773888171.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/binomial_calculator_online.pdfIn PDF document text
    • https://s3.amazonaws.com/kujesulad/93113726523.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf29.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF29 4860 bytes
SHA-256: 30e4389359ead4b002b21e443d0cdfd074125cf2e085ebd765c5a106303c8f43
font_01_sfnt_off0000cf9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF9E 10552 bytes
SHA-256: b2ef9e1384b9444657e0c4640715d018377ae8b56c7e577a94b2d7c3ff558e5a
font_02_sfnt_off0000f37a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f

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