Malicious PDF — malware analysis report

Static analysis result for SHA-256 dddfdaf02e1ea5e8…

MALICIOUS

PDF

84.3 KB Created: 2021-05-08 18:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 268ac22de2ca886af8744778eda4ca48 SHA-1: 710f3ecef3edbbb6b1215a22ed65bff908ecd2d0 SHA-256: dddfdaf02e1ea5e80e936d8f4294d10078627fd45e9979e1193b8cd3e49449f6
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 0.9994

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://dugedepap.ru/strik?utm_term=power+plant+protein+boost PDF link annotation
    • http://tuzojexis.mypressonline.com/14307908507.pdfIn PDF document text
    • https://rubosesizip.weebly.com/uploads/1/3/4/7/134744628/sowipewisunovibux.pdfIn PDF document text
    • http://bikelumonekodex.mygamesonline.org/zefaparudiruxib.pdfIn PDF document text
    • https://cdn.sqhk.co/mebinolopuf/5e2BhgJ/glory_ages_samurais_apk_download.pdfIn PDF document text
    • http://letinebab.mywebcommunity.org/48379868023.pdfIn PDF document text
    • https://cdn.sqhk.co/wefekoferu/naAhcgj/dibobo.pdfIn PDF document text
    • https://cdn.sqhk.co/lojavowi/gpibggf/star_wars_after_effects_template.pdfIn PDF document text
    • http://kagutakonupana.iblogger.org/60655851842.pdfIn PDF document text
    • http://kuwawaf.mypressonline.com/vubinelapepuwegirevu.pdfIn PDF document text
    • https://janilanupaga.weebly.com/uploads/1/3/4/6/134673225/7193545.pdfIn PDF document text
    • https://cdn.sqhk.co/jopubelo/tAXjerE/battle_for_wesnoth_1._12_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fixiwajavonuti.atwebpages.com/sovulefevawovatifore.pdfIn PDF document text
    • http://zonatitusajobo.onlinewebshop.net/agenda_2020_free_download.pdfIn PDF document text
    • http://fukorow.epizy.com/punugosow.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/wijilasufeneki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/71cc2b76-923b-4094-9dc6-c0d671c45cd8/xubid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b5ff9e1-cd03-487f-802b-2c37edaa878f/was_lights_out_with_david_spade_cancelled.pdfIn PDF document text
    • http://wipibefab.onlinewebshop.net/97757048834.pdfIn PDF document text
    • http://voxotili.epizy.com/82291250029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/177c4940-5deb-480f-a220-6fa660caf3ff/dexiboxuxofixosadujoxekiz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4226c2a2-d9fd-41ef-905a-be554f22c47a/yellow_soles_of_feet_in_child.pdfIn PDF document text
    • http://wififeju.atwebpages.com/77685322282.pdfIn PDF document text
    • http://pidodexogejax.myartsonline.com/stay_strong_father_quotes.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_off00010ada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ADA 5044 bytes
SHA-256: 2c814c0e80ca50a1ef32697afc69688571e0ecad600b2c2a205c6bf3d28b3593
font_01_sfnt_off00011c1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1B 11828 bytes
SHA-256: 8fe5606374578a47933ffd8b604b8acd6d9c99ca1a248deb7420ba05002eaee3

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