Malicious PDF — malware analysis report

Static analysis result for SHA-256 6d80279c3f40de32…

MALICIOUS

PDF

76.8 KB Created: 2021-03-15 09:09:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 00edc1d34edeedd4216ffb3914dfa410 SHA-1: f92aa928982e4b1c84260b5a8f5da49a55339381 SHA-256: 6d80279c3f40de32c7110ca937a81baf1f186e2948426175e95165e78c576e26
126 Risk Score

Malware Insights

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

This PDF was flagged by ML classifiers and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains numerous external URIs, with at least one, https://mezovuduw.ru/wb?keyword=does%20tessa%20ever%20get%20with%20zed, being a primary indicator of a phishing or malware distribution lure. The PDF structure and embedded links suggest it acts as a delivery mechanism, likely via spearphishing, to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://mezovuduw.ru/wb?keyword=does%20tessa%20ever%20get%20with%20zed PDF link annotation
    • http://lojapidabud.mypressonline.com/life_after_life_raymond_moody_read_online.pdfIn PDF document text
    • https://cdn.sqhk.co/govazofaj/hbhcdjb/2240313941.pdfIn PDF document text
    • https://cdn.sqhk.co/bikugipozamu/cj2jjgf/famidivip.pdfIn PDF document text
    • http://lozavisimas.22web.org/comparison_of_adverbs_worksheets.pdfIn PDF document text
    • http://lamakexo.scienceontheweb.net/43206373593.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/eIPibgi/dungeon_mayhem_monster_madness_sleeves.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382201/normal_5ff3295115487.pdfIn PDF document text
    • https://cdn.sqhk.co/dedomafub/qidjjgi/yeezy_700_v2.pdfIn PDF document text
    • https://cdn.sqhk.co/zesojesiwi/jTemigu/teddi_mellencamp_husband_ethnicity.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481409/normal_5fe64095ceeb4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413362/normal_602f404327cb4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/80b506e2-94db-4d08-b136-c25ca0c5809f/clear_mind_similar_words.pdfIn PDF document text
    • http://kemesid.onlinewebshop.net/kejofozijifefobixe.pdfIn PDF document text
    • http://naratide.epizy.com/bus_animated_gif_free.pdfIn PDF document text
    • http://jezevenakos.myartsonline.com/la_metamorfosis_de_una_madre_libro_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/vutame/965015105.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0066898b-8725-48e1-8176-2bcc9ea4954b/murray_riding_lawn_mower_belt_size.pdfIn PDF document text
    • http://zimekinolidi.rf.gd/15775427614.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ca2ba8b-61e3-4c5e-923c-6a4070492f48/zasivuropitizufosa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e218c298-6aa1-4f3a-987d-d373f1f6a117/what_does_economic_imperialism_mean_in_a_sentence.pdfIn PDF document text
    • http://gidimuni.epizy.com/budgeting_for_college_students.pdfIn PDF document text
    • https://s3.amazonaws.com/novipaliwid/83217364933.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/126bd391-c47a-4886-8810-2dd0e1afb2c9/38353731376.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_off0000ed8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED8F 5256 bytes
SHA-256: 970ea8f31548a1fc140bce6e55e2c78276c9de28bd63899dd9aeff057bc27fbe
font_01_sfnt_off0000ff92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF92 10696 bytes
SHA-256: ecf7f1c8468b5c9083c69536fd3326e8f5f46454ecb3d6a354bec996211df6ba

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