Malicious PDF — malware analysis report

Static analysis result for SHA-256 d20ec29453e39479…

MALICIOUS

PDF

74.1 KB Created: 2021-05-11 20:44:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 81775a575a8f7f892b6edc056c00e371 SHA-1: 267f84a41e4137d7ffb2a6124e5814acccb540dd SHA-256: d20ec29453e39479cbbb770a265e3cc1173eb1b400bd74532a6ea08dc7655bae
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 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://xezojetit.ru/strik?utm_term=honeywell+mm14chcs+parts PDF link annotation
    • http://pimunipimikuvaj.iblogger.org/anatomy_and_physiology_cardiovascular_system_notes.pdfIn PDF document text
    • http://gepavozo.mygamesonline.org/el_criticon_baltasar_gracian.pdfIn PDF document text
    • http://zasufigonibat.getenjoyment.net/12506772729.pdfIn PDF document text
    • http://xexisutufas.iblogger.org/appium_tutorial_for_beginners.pdfIn PDF document text
    • http://vopugixeroramox.medianewsonline.com/reloading_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wugujub.onlinewebshop.net/kinetico_water_softener_filter_replacement.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a189965a-4c7b-4692-bc14-e479ecfcbfdd/microsoft_flight_simulator_2020_xbox_release_reddit.pdfIn PDF document text
    • https://ce3a146a-d504-4efb-981c-4593fb85d965.filesusr.com/ugd/5b5da7_21bd31a17a0a4732866e87e0e00290c6.pdf?index=trueIn PDF document text
    • https://584abdf6-e408-48d3-a53c-4313a8f82471.filesusr.com/ugd/18ee90_596ab2410d8048eaa04f11e4b751313a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/6796e8e3-0aa3-4911-bd56-6565b29427aa/noxidobimiwisoxekukalik.pdfIn PDF document text
    • http://lekekavom.epizy.com/antivirus_para_android_el_mejor_2019.pdfIn PDF document text
    • https://502e425a-54a0-4661-a3e6-c6e116bdb13d.filesusr.com/ugd/10da26_4467ad7934f84b8fa5413e5c2167e0ca.pdf?index=trueIn PDF document text
    • https://0306adf0-382e-42f1-903d-71c3961c97f1.filesusr.com/ugd/7ff653_1e3ae05eccb94a64bda79adf638dca9a.pdf?index=trueIn PDF document text
    • http://vupaguriwedizid.atwebpages.com/faburifep.pdfIn PDF document text
    • https://6129906d-bc82-46a7-99f5-71793a58af3c.filesusr.com/ugd/d162e3_7d52cdb00f2148c8bf2b28b0ce107e24.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/304afa41-b66d-4252-bdcd-e9fea16a8c90/wapepupijaginosin.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_off0000e43e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE43E 5468 bytes
SHA-256: ba5538ddaf28376d9a4c41168b430de02bfcdf24a938881c1bc64f862fbda768
font_01_sfnt_off0000f6d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6D3 10700 bytes
SHA-256: 08ff0610ef727a269b0f9dbfc3fc104633f631953d36cb79148951b64321a694

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