Malicious PDF — malware analysis report

Static analysis result for SHA-256 501b14a5e57008a8…

MALICIOUS

PDF

76.8 KB Created: 2021-03-30 20:56:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: d1f8db1f53e85719e2f54a0f887db108 SHA-1: e26f122d4fd12a62177d1eba368fc47c429fd60e SHA-256: 501b14a5e57008a886d3c39f96924b77c37ba2532582fdaf70839c0777e84941
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with one specifically pointing to a suspicious domain that appears to be a redirector for a phishing or malware campaign. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to lead the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://jottigo.ru/strik?utm_term=vizio+sound+bar+stopped+working+no+power PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465565/normal_5fc5a01333935.pdfIn PDF document text
    • https://fefujosiniw.weebly.com/uploads/1/3/4/8/134862858/wofat_kupavonula.pdfIn PDF document text
    • https://cdn.sqhk.co/nojedajoze/3egfidn/92145412858.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454422/normal_6004dd53bc504.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447271/normal_602550926ce1d.pdfIn PDF document text
    • https://fulojexerewo.weebly.com/uploads/1/3/5/3/135345176/8f69ae5f9a.pdfIn PDF document text
    • https://cdn.sqhk.co/junibukison/gLiaJ43/deadpool_1_tamil_movie_in_isaimini.pdfIn PDF document text
    • http://wisopenudaris.22web.org/funcion_del_sistema_endocrino_para_nios.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4414860/normal_5fc89d946b8a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421612/normal_601f53a843122.pdfIn PDF document text
    • https://cdn.sqhk.co/rekubapapup/e9gjJgh/pujepifipenupakixe.pdfIn PDF document text
    • http://gijofabenetawix.66ghz.com/pulse_bima_company_online_form.pdfIn PDF document text
    • http://manekobe.22web.org/during_an_osha_inspection_answer_key.pdfIn PDF document text
    • https://kuduxuke.weebly.com/uploads/1/3/5/3/135323303/4772805.pdfIn PDF document text
    • http://fetisaletom.iblogger.org/manual_de_borland_c_5._02.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365626/normal_5fc65776a595d.pdfIn PDF document text
    • http://vevujegijozu.iblogger.org/banting_diet_plan_free_download.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wibigaja.epizy.com/booty_workout_plan_at_home.pdfIn PDF document text
    • http://jezanijumoz.epizy.com/stihl_gas_weed_eater_prices.pdfIn PDF document text
    • http://zutumifamele.rf.gd/aambala_songs_starmusiq_free.pdfIn PDF document text
    • http://notufexunu.rf.gd/65677490699.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_off0000ed2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED2E 5408 bytes
SHA-256: 1bc7de49c0d805baf3ca91a4d61e4549797dfcf20a23dbb5d7922fdb0121ce84
font_01_sfnt_off0000ffbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFBD 11168 bytes
SHA-256: 291ca20cc3ab25ebd1b1eb7827b5910f6d18370e7c63fc42c827756c15051b6d

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