Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb0161297c631501…

MALICIOUS

PDF

74.1 KB Created: 2021-03-28 13:42:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: ac0738e192e9a8cafe0ed3f522d2fffa SHA-1: 99969774e1ce6dc70135e4a9db0118ec875562ef SHA-256: eb0161297c6315013a9a70b3e17dcb4cb0856c6e25a1dfdaf370a1764e96b058
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was flagged by multiple heuristics, including a high-confidence ML classifier and ClamAV detection as a phishing trojan. The document body, though heavily obfuscated, contains references to financial queries and is associated with numerous external URLs, many hosted on disposable domains. These URLs likely serve as part of a link farm designed to redirect users to malicious content, consistent with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://resalured.ru/wix?keyword=what+time+does+chime+direct+deposit+go+through PDF link annotation
    • https://molisemopum.weebly.com/uploads/1/3/1/4/131437834/922dc8.pdfIn PDF document text
    • https://cdn.sqhk.co/zopizote/hgcWGgh/naguna.pdfIn PDF document text
    • https://jokexasopa.weebly.com/uploads/1/3/4/6/134677232/pitosedajewulezi.pdfIn PDF document text
    • http://tobufupevujuma.mygamesonline.org/english_grammar_with_tamil_explanation.pdfIn PDF document text
    • https://cdn.sqhk.co/dofexoxev/7s99ujY/vivo_video_editor_for_pc.pdfIn PDF document text
    • https://zofijakifixanow.weebly.com/uploads/1/3/4/6/134677560/9135823.pdfIn PDF document text
    • https://lotefexikig.weebly.com/uploads/1/3/4/0/134097130/wewizelim.pdfIn PDF document text
    • http://wokodanib.getenjoyment.net/misotavujoletomes.pdfIn PDF document text
    • http://reawont.online/nimavozotumodbdr0.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/8Mmojea/english_story_books_to_read_online.pdfIn PDF document text
    • http://remont-pc.website/xipuvosuxufativa4vi.pdfIn PDF document text
    • https://vetuvixix.weebly.com/uploads/1/3/1/4/131437813/23ce2.pdfIn PDF document text
    • http://lipexifinidoda.scienceontheweb.net/problemas_educativos_en_estados_unidos.pdfIn PDF document text
    • http://viwavidif.getenjoyment.net/83378617143.pdfIn PDF document text
    • https://cdn.sqhk.co/janonaset/pjajjb1/google_calendar_sync_apk_5._1.pdfIn PDF document text
    • http://wojesukuzak.mygamesonline.org/scotts_speedy_green_3000_settings_for_weed_and_feed.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/27980453816.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/3485155970.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/vivunoputedu.pdfIn PDF document text
    • https://s3.amazonaws.com/banula/the_water_is_wide_chapter_5_summary.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_off0000e1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1E6 5468 bytes
SHA-256: 40dac7f2387224ba43f1c84934f3a1708d85b1d18a4c933e145c9ce4fea11694
font_01_sfnt_off0000f460.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF460 10844 bytes
SHA-256: d31f1f4c9275fb2892e3df54ad260db98f3075242f92f4cec1d8897d7ac4dfdb

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