Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c080823d17a2483…

MALICIOUS

PDF

86.3 KB Created: 2021-03-13 20:53:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-23
MD5: 7f39298c4884c092801337b07cca2a83 SHA-1: edc91733a2435b18d85311bd3857309ff8d4bb9c SHA-256: 2c080823d17a24833b35b18abeaea54dcf317f46b07c806b5429ddf8c208a4f9
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, indicating a link farm or phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of external URIs and a link farm heuristic points to the document's primary function being to redirect users to potentially harmful sites.

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://gimoguvi.ru/strik?utm_term=toro+6.5+recycler+lawn+mower+manual PDF link annotation
    • https://natutiwuv.weebly.com/uploads/1/3/6/0/136019317/45284b1e10b4f.pdfIn PDF document text
    • http://tulavesew.getenjoyment.net/new_immunization_schedule_2020.pdfIn PDF document text
    • https://zelareto.weebly.com/uploads/1/3/4/0/134096818/fegofew-gikupof-tarone-nipawomozat.pdfIn PDF document text
    • https://tuledekubixa.weebly.com/uploads/1/3/4/7/134722649/3039790.pdfIn PDF document text
    • https://fudanologakobur.weebly.com/uploads/1/3/5/3/135394175/sizoramemir.pdfIn PDF document text
    • https://xanuzelikaba.weebly.com/uploads/1/3/4/8/134889809/refekiwexov.pdfIn PDF document text
    • https://nugazemagutum.weebly.com/uploads/1/3/4/3/134346004/pesawuvo.pdfIn PDF document text
    • https://cdn.sqhk.co/guzorata/cB2lgjm/auto_clicker_for_hp_chromebook.pdfIn PDF document text
    • https://cdn.sqhk.co/pibusupi/jcvhhWH/vafufasebasowase.pdfIn PDF document text
    • https://paxepufa.weebly.com/uploads/1/3/4/6/134640660/kekub.pdfIn PDF document text
    • https://cdn.sqhk.co/lisutovudaf/i824gig/mibofagux.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/iiBFQQQ/busupenadafamevokara.pdfIn PDF document text
    • https://lixazasowab.weebly.com/uploads/1/3/4/5/134588429/tepidujegut.pdfIn PDF document text
    • http://raguvigawak.mypressonline.com/suzulapivitipaterasizugar.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/fajeloninesitel/avengers_infinity_war_full_movie_moviezwap.pdfIn PDF document text
    • http://xovolefewawex.atwebpages.com/origami_diagrams_intermediate.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/21a83964-5c7e-4a9d-bd24-e81e916930cc/titiwugezazojotuzu.pdfIn PDF document text
    • https://s3.amazonaws.com/bogijexu/brain_teaser_maths_puzzles_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/temujonuwu/netozutitat.pdfIn PDF document text
    • https://s3.amazonaws.com/bisegilupuf/addition_and_subtraction_worksheets_ks1.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/358fd436-27b3-42b7-ad8b-25c2a5f357f7/barrons_ap_statistics_11th_edition.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_off0001138e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1138E 5220 bytes
SHA-256: aaf03e508f4d157e2fc99b8211fa1af3dfb373dc6b84f0597f0c44e45ae52bac
font_01_sfnt_off00012564.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12564 11368 bytes
SHA-256: 85205cfcb2753bc8d81ca923a282b302d50a6232211f5f5f06eab170b880a262

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