Malicious PDF — malware analysis report

Static analysis result for SHA-256 dde68849c4674e9b…

MALICIOUS

PDF

77.1 KB Created: 2021-03-12 06:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 3a06a15622c6bc72b15b17c6094b4a14 SHA-1: db8cb51453cd632d555be3072f9a3f8fbda40a8b SHA-256: dde68849c4674e9bf3b6b511f9aea412a4e84a94f09c763f1b7e3c201c153f54
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. The document contains an embedded URI pointing to 'dugedepap.ru', which is likely part of a phishing or malware distribution scheme. The presence of numerous links and the use of disposable hosting suggest a link farm designed to obscure the final malicious destination.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://dugedepap.ru/strik?utm_term=what+happens+at+the+end+of+safety+not+guaranteed PDF link annotation
    • http://gavediteriremuv.medianewsonline.com/close_encounters_communication_in_relationships_4th_edition_free.pdfIn PDF document text
    • http://dadamipu.iblogger.org/why_is_the_african_honey_bee_an_invasive_species.pdfIn PDF document text
    • http://fogogesedawe.iblogger.org/cyberpunk_2020_johnny_silverhand_adventure.pdfIn PDF document text
    • http://bipowilago.mywebcommunity.org/xuxevipafimoxinopawumovu.pdfIn PDF document text
    • http://afracheat5.xyz/97552126154wfmlj.pdfIn PDF document text
    • http://lazadacostumercenter.com/kannada_new_movie_feeling_songsqdqin.pdfIn PDF document text
    • http://mamubisuk.mypressonline.com/is_the_dell_optiplex_9020_good_for_gaming.pdfIn PDF document text
    • http://kuzexamipapoxip.medianewsonline.com/sign_of_the_beaver_chapter_6-10.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/d4127b98-6749-45bf-b039-544d76e009a8/mesa_boogie_dual_rectifier_manual_espaol.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ed9435b4-4ccd-4fb9-bdd0-10b750357723/weedeater_featherlite_sst25ce_parts_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a595befa-8814-4bfa-9609-b5e7ab68ba69/procare_replacement_humidifier_filter_pcwf813.pdfIn PDF document text
    • https://s3.amazonaws.com/davolazupivowi/basevebulozimu.pdfIn PDF document text
    • https://s3.amazonaws.com/sulasatevirexo/3rd_rock_from_the_sun_episode_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7df44167-02b3-48b0-9018-2a0ecf0d2541/lincoln_140_pro_mig_welder_reviews.pdfIn PDF document text
    • http://nanoxujam.epizy.com/buzuwukexirorag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ac596da-354d-4061-915c-f60bb024773e/toxepakoferujogu.pdfIn PDF document text
    • https://s3.amazonaws.com/vifusupegiza/aq_hybrid_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/sesafefanulokam/68297598359.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/840520fe-06b3-4903-9e10-186845c468c6/budizuni.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

Related samples 8

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000edae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDAE 5384 bytes
SHA-256: acfb9ff49d53aa2e9377c804b8bae7b6c491932d520ac34ceb40cacf666d8356
font_01_sfnt_off00010013.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10013 11516 bytes
SHA-256: 2d4b4bfa50560bcb86dd29639f0509ee1ce7ef897ea22b73e9f82eec1f33364e

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