Malicious PDF — malware analysis report

Static analysis result for SHA-256 56504150354e992c…

MALICIOUS

PDF

81.3 KB Created: 2021-02-22 08:54:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: fbaad4763322bc8475143c7e464ad1e8 SHA-1: 3017cff290c195c68f7392de43be9cf60edbf40a SHA-256: 56504150354e992c8578faa7e702d052d59636b3dd378e01c7f7d970ff08369a
186 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 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://jottigo.ru/strik?utm_term=fender+vibro+champ+xd+vs+blues+jr PDF link annotation
    • https://bivapere.weebly.com/uploads/1/3/4/6/134689139/6958126.pdfIn PDF document text
    • https://fojakejozu.weebly.com/uploads/1/3/2/7/132712415/5588375.pdfIn PDF document text
    • https://cdn.sqhk.co/rufomezin/dcqihzn/tamotobigemelav.pdfIn PDF document text
    • https://solezoxi.weebly.com/uploads/1/3/4/6/134654925/duroza.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388274/normal_600db5143c4dc.pdfIn PDF document text
    • https://samazixudoreput.weebly.com/uploads/1/3/2/6/132681586/1581845.pdfIn PDF document text
    • http://manoligixave.66ghz.com/43119450478.pdfIn PDF document text
    • https://cdn.sqhk.co/virapazetif/jfihkgj/kanuz.pdfIn PDF document text
    • https://mufuxavezefajox.weebly.com/uploads/1/3/4/4/134497947/600fe5c9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rimalapotozuf.epizy.com/john_deere_x324_for_sale_craigslist.pdfIn PDF document text
    • http://gipatoxusopupos.epizy.com/apk_mod_vidmate_versi_terbaru.pdfIn PDF document text
    • http://nikonujilo.epizy.com/rain_dial_sprinkler_timer_manual.pdfIn PDF document text
    • http://kewivifonawati.epizy.com/ziraredibojerikumegi.pdfIn PDF document text
    • http://wajiletum.epizy.com/xovusasam.pdfIn PDF document text
    • http://nodefojabotozij.rf.gd/95446910458.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_off0000ffc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFC8 5612 bytes
SHA-256: f7ee6b6e9e91ed69a7d6717570b20916c7f1b08d8d78581b7ae3c0d92b0c1f86
font_01_sfnt_off000112bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112BB 10984 bytes
SHA-256: 367ecdf4b8e943350bb80bfdc8436cafb60e731371fa0855905d555f74860905

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