Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6f16b039952dd9c…

MALICIOUS

PDF

78.6 KB Created: 2021-03-06 10:17:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: eb62975d6d4cd3943f396961f27ea69e SHA-1: 76cae8aa8ed69f310985ee10e7086654fcc668db SHA-256: d6f16b039952dd9cbeb85c0bbbc0e92cf2555fcec0a472665b5c27a87f96dae9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

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 0.9993

Heuristics 5

  • 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 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://druttle.ru/wix?keyword=maytag+epic+dryer+owners+manual PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417312/normal_6006564058c23.pdfIn PDF document text
    • https://ragurinibobuma.weebly.com/uploads/1/3/3/9/133986244/34f42b7.pdfIn PDF document text
    • http://apkweb.net/angeles_city_walking_street_guiderh8of.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488329/normal_5fe3a7fda5661.pdfIn PDF document text
    • https://lenopeseku.weebly.com/uploads/1/3/4/0/134040497/7027500.pdfIn PDF document text
    • http://lirelejavebot.iblogger.org/jikulamoreze.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427103/normal_5fee4729c32a6.pdfIn PDF document text
    • http://xolorodabo.22web.org/67366842680.pdfIn PDF document text
    • https://wunurobi.weebly.com/uploads/1/3/4/8/134881210/bezuzolezajodu.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365613/normal_5fc5bffcc5caf.pdfIn PDF document text
    • https://serofijukepaba.weebly.com/uploads/1/3/4/6/134693026/9936968.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392220/normal_603ff5e31f72c.pdfIn PDF document text
    • http://bupro.asia/akhisarspor_krmz_formabi807.pdfIn PDF document text
    • http://sell-toclick.online/animal_kingdom_class_9_notesu6ji9.pdfIn PDF document text
    • https://zezevibowavaki.weebly.com/uploads/1/3/4/8/134854125/950fb4fa3ff.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xijovapafibowuw.rf.gd/nunix.pdfIn PDF document text
    • http://japivolenalu.epizy.com/dopifujuxasa.pdfIn PDF document text
    • http://fabonek.rf.gd/vukiri.pdfIn PDF document text
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_021cc25f6ff04653bac651bfaacbd668.pdf?index=trueIn PDF document text
    • http://wifepex.rf.gd/brother_pe770_for_sale_near_me.pdfIn PDF document text
    • http://jopavufugas.epizy.com/anthropology_syllabus.pdfIn PDF document text
    • http://dopodisimedu.epizy.com/emoji_faces_worksheet.pdfIn PDF document text
    • http://vodadusilop.rf.gd/ancient_dracolich_5e_stats.pdfIn PDF document text
    • http://fabavokawibawo.epizy.com/ridevorafa.pdfIn PDF document text
    • https://4a39c6c9-989b-4d11-b2d8-cc0becc7f193.filesusr.com/ugd/ef0078_6673a19b55304bcf82caf9e1165a6099.pdf?index=trueIn 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_off0000f6f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6F7 5592 bytes
SHA-256: bab8263f7b12388e4632129f4f0c9e0199021bfbe3618a224c1ff8ac355819af
font_01_sfnt_off00010a0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10A0C 10192 bytes
SHA-256: 125f4b41e39234a7ad7fe5919e1bdff829d21f1458b05dd698be983dc9928aa1

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