Malicious PDF — malware analysis report

Static analysis result for SHA-256 b02e37482fc026df…

MALICIOUS

PDF

108.2 KB Created: 2021-03-18 06:23:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: ee29ec21772009d006a35bd33f8eaee6 SHA-1: d82561a4f303115422b40f81f8b1c21b1d0976f6 SHA-256: b02e37482fc026dfd98bfe24abed7164291f81012c1ac21f9ae4f52268bf71f7
194 Risk Score

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 presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • 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.
  • 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://soxebez.ru/wix?keyword=laboratory+manual+chemistry+class+12 PDF link annotation
    • https://dujisiseruw.weebly.com/uploads/1/3/0/7/130776106/vejudoxawal-vemado-dukuvi.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/how_to_turn_off_ice_maker_sub-zero_550.pdfIn PDF document text
    • http://fosireditoj.mygamesonline.org/voziwumadezepusil.pdfIn PDF document text
    • https://kasasifu.weebly.com/uploads/1/3/4/6/134697732/998486.pdfIn PDF document text
    • https://dikapala.weebly.com/uploads/1/3/4/7/134700225/5993165.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dagogedimin.rf.gd/posati.pdfIn PDF document text
    • https://1628ddcf-e301-416d-9649-d9339b85441b.filesusr.com/ugd/0b1079_bfdc792bfdf946568e5f12758d9b5a33.pdf?index=trueIn PDF document text
    • http://wuxojawe.epizy.com/97144477121.pdfIn PDF document text
    • https://d429d46a-6203-486b-8c9d-ede5597e1383.filesusr.com/ugd/419b00_0947e44eb73d4cb88b51519bb895291f.pdf?index=trueIn PDF document text
    • https://3e1d1bad-f645-4ebd-ac75-469e7ff7c972.filesusr.com/ugd/e745be_dbe40b1f36a649959c97e0d594208257.pdf?index=trueIn PDF document text
    • https://9fd063f5-a6e2-47f0-a1c8-15c646e36cc9.filesusr.com/ugd/ee11ea_779658145e2847cc9d6b497375f6f511.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/95488d8c-fd95-4a3c-a8fd-0491fe154ec7/tejasasejabamovuto.pdfIn PDF document text
    • https://dbba0f06-1911-40f0-8c80-a2638c7f81cc.filesusr.com/ugd/b13fd1_eea01926f61f429587456cb0195ee1c1.pdf?index=trueIn PDF document text
    • http://zoguwazor.epizy.com/22658299977.pdfIn PDF document text
    • http://jenikov.epizy.com/ahetuk_all_songs_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef4f05c9-db50-40c5-8cfa-9308dc7a72b6/beats_headphones_price_best_buy.pdfIn PDF document text
    • http://xowudibopope.epizy.com/basic_html_tags_and_attributes.pdfIn PDF document text
    • http://kuxoxokazutuv.myartsonline.com/28665513314.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001516c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1516C 5404 bytes
SHA-256: 99081aa7929cd32aef62f043f1f2ff23fa01278b6ae1ae5eb1b929ea2170a371
font_01_sfnt_off000163af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163AF 12312 bytes
SHA-256: 0f7922d66558b356df766f2ca8b99d274d70f565ab7b59a561328ec4c76c3356
font_02_sfnt_off00018d48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18D48 16204 bytes
SHA-256: 532315dfdc59b350d447ad91845dd8cc72a836e684f536ab9a4305dc5b53fb8e