Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d466b47f0d25a69…

MALICIOUS

PDF

83.6 KB Created: 2021-03-28 11:51:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 0dced8f5549f67507265d67ffbec9013 SHA-1: 2c908ba1613810808a99e33bcf090cd02f5296ac SHA-256: 8d466b47f0d25a69d4ce114377c94398bdb1193f1997446789c9b705e3d7d46e
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 0.9995

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://kuzutuzo.ru/123?utm_term=ionic+framework+design+templates PDF link annotation
    • http://songkfrk.site/galvanized_iron_sheetjr5ku.pdfIn PDF document text
    • http://pedalini.club/annabel_lee_analysis_poem3svxw.pdfIn PDF document text
    • http://erogan-encolumbia.site/43588358109pfscg.pdfIn PDF document text
    • http://logvoz.ru/halloween_2020_full_moon_time_changexlz6l.pdfIn PDF document text
    • http://remileboj.22web.org/pavuluxiji.pdfIn PDF document text
    • http://mebets.xyz/butipalipimutopupawitexujjtqmn.pdfIn PDF document text
    • http://craftsmansmetics.com/audible_free_bookdq15m.pdfIn PDF document text
    • http://vixemifojetinag.sportsontheweb.net/anti_theft_alarm_for_bikes.pdfIn PDF document text
    • http://difozoxezepi.getenjoyment.net/class_9_history_book.pdfIn PDF document text
    • http://sungo1.space/92660175297h4ynb.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
    • https://00eaa6b3-f026-4720-b00f-fafb40066352.filesusr.com/ugd/d498be_007e52c5ffd44e42a0e43b1255f6d64a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef761b11-d01f-43f2-9b7e-e11aa8eea22f/12467451112.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5444ca06-c020-426a-9384-e59f930d7a37/bob_evans_ground_sausage_nutrition_facts.pdfIn PDF document text
    • http://wonimawepesola.epizy.com/55176893624.pdfIn PDF document text
    • http://moxixezegosa.onlinewebshop.net/japowopofurota.pdfIn PDF document text
    • http://fenulujexita.epizy.com/35290592709.pdfIn PDF document text
    • http://gafelen.epizy.com/begaxebijefu.pdfIn PDF document text
    • https://ede8a7a3-2377-4e09-926a-401222b31c25.filesusr.com/ugd/81c89d_86f872a86ed54a3db1b83263046fce03.pdf?index=trueIn PDF document text
    • https://43cb2d18-1589-43a7-b1c5-fe1278e1c76d.filesusr.com/ugd/370b54_c6bbd16cf07a4664b9326b405d7d6f98.pdf?index=trueIn PDF document text
    • https://43081b45-6e48-4b43-b724-9328fda377ae.filesusr.com/ugd/26481d_c20e8adf66e347f3ad1afae1048130ec.pdf?index=trueIn PDF document text
    • http://ropupifalapoges.atwebpages.com/aligning_with_the_divine.pdfIn PDF document text
    • http://merapenerabari.myartsonline.com/jimusenirunepuzokesovazu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eff8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFF8 5356 bytes
SHA-256: ef1765415f35d02014c0a1a05028c5157a3829cc9d7a69067c13703b45955415
font_01_sfnt_off00010221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10221 21116 bytes
SHA-256: 1d80938dc31af7087edf1bcc6c43bece618ad25964cfd52d36d72a79ec688492
font_02_sfnt_off000130dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130DD 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e

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