Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f06b8421d0f385a…

MALICIOUS

PDF

77.7 KB Created: 2021-02-28 21:27:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 3c50356cfe16321fe7391e903cfcc65f SHA-1: 06bbe922221518a9cd784ad13c75038e105ff0b7 SHA-256: 0f06b8421d0f385a132b4fd9dfa6279027b9707d0517f4c78fad875a7da127af
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 0.9996

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://bologen.ru/wix?keyword=ph+scale+worksheet PDF link annotation
    • http://gefejisu.22web.org/lonemarijiw.pdfIn PDF document text
    • https://cdn.sqhk.co/pejinijew/ylgfTwb/dreamer_lyrics_supertramp.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374540/normal_6019fdbbaaad4.pdfIn PDF document text
    • http://xusonawifofi.iblogger.org/listed_building_enforcement_notice_template.pdfIn PDF document text
    • http://kutatit.getenjoyment.net/what_powers_does_a_guardian_have.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4377407/normal_5ff42c6411e93.pdfIn PDF document text
    • https://pusotovoxidelo.weebly.com/uploads/1/3/1/6/131637553/6179418.pdfIn PDF document text
    • https://gakokoxexoboj.weebly.com/uploads/1/3/0/7/130776672/xulilidexidefegilomu.pdfIn PDF document text
    • https://kotepavugenufe.weebly.com/uploads/1/3/4/5/134592782/1261015.pdfIn PDF document text
    • https://pigiwikabulate.weebly.com/uploads/1/3/1/8/131856715/6903949.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://geforagegi.atwebpages.com/what_base_do_navy_seals_train_at.pdfIn PDF document text
    • http://zogosugo.onlinewebshop.net/black_and_decker_air_swivel_vacuum_brush_not_spinning.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/15406460143.pdfIn PDF document text
    • https://s3.amazonaws.com/wibedubosateg/khandeshi_ahirani_dj_song.pdfIn PDF document text
    • http://mutidulofof.epizy.com/20556587501.pdfIn PDF document text
    • http://mukelobader.rf.gd/informal_letter_format_for_college_students.pdfIn PDF document text
    • https://s3.amazonaws.com/foneniz/bad_boy_song_pagalworld_320kbps.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d40f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD40F 4680 bytes
SHA-256: 0debbb7a2322336df16e6153bbcb79be17498e13ecb46eb228b2c86ac49a6af6
font_01_sfnt_off0000e40e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE40E 10184 bytes
SHA-256: c5326ed1bdf3eb60e2174b6fc95d98d7db6666fc0f895c9f6c3fc19f47c741ef
font_02_sfnt_off00010723.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10723 16060 bytes
SHA-256: c43c81af3addadc619f1b50b0eb79006c69e58cb90abf43f7a5fbd940e22698c
font_03_sfnt_off00011bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB7 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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