Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f0a460f46b54325…

MALICIOUS

PDF

78.8 KB Created: 2021-04-04 03:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-25
MD5: 9effe9be9d10322de450969d0dbece1d SHA-1: 27fcb842e91ebccefb66d5dfdd1352ed0666009e SHA-256: 0f0a460f46b543253bd0d149a33c85d8c28252949c2a36d355f831a839bb690b
192 Risk Score

Malware Insights

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

The PDF contains multiple heuristics indicating malicious intent, including links to known malicious redirector infrastructure and a high ML classifier score. The presence of a 'download button' lure further supports a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it is designed to redirect users to download malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://crophysi.ru/wix?keyword=ratatouille+full+movie+free+download+hd In PDF document text
    • http://tibijosetinaj.getenjoyment.net/fexirokumipolitetivosiku.pdfIn PDF document text
    • http://guwunewuwujulat.iblogger.org/remojifagoje.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446494/normal_60673842a31f3.pdfIn PDF document text
    • http://kovuzaxaf.medianewsonline.com/why_is_my_macbook_not_charging_to_100.pdfIn PDF document text
    • http://takovod.66ghz.com/xoguripajupavagirogamufum.pdfIn PDF document text
    • http://dofonizil.22web.org/bringers_of_the_dawn_barbara_marciniak.pdfIn PDF document text
    • http://selozufuwadapuw.66ghz.com/7998468758.pdfIn PDF document text
    • http://xevojifixifepi.scienceontheweb.net/batman_hush_comic_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480155/normal_601830b95dddd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409798/normal_60644b6596360.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://radiviwix.onlinewebshop.net/cambridge_checkpoint_english_coursebook_7.pdfIn PDF document text
    • http://zilagojusorevu.epizy.com/bhopal_express_platform_no_in_delhi.pdfIn PDF document text
    • http://xolonofifoju.rf.gd/jadefiputamoxaz.pdfIn PDF document text
    • http://gumuparalimej.rf.gd/83971105755.pdfIn PDF document text
    • http://bitibidebizofu.epizy.com/le_petit_nicolas_film_complet_en_francais_2010.pdfIn PDF document text
    • http://nugafafekovad.epizy.com/beden_dili_kitab.pdfIn PDF document text
    • http://simifumujabiguw.rf.gd/beyond_good_and_evil_2_trailer.pdfIn PDF document text
    • http://zaposupi.epizy.com/badminton_footwork_techniques.pdfIn PDF document text
    • http://muzezal.rf.gd/nepinezetumabifejenijimu.pdfIn PDF document text
    • http://jalasofumikom.rf.gd/48849761180.pdfIn PDF document text
    • http://tatumizisasi.epizy.com/vigopiwitakotopupogav.pdfIn PDF document text
    • http://pijosufun.myartsonline.com/vegowetajajagekowegugikib.pdfIn PDF document text
    • http://gejaran.epizy.com/game_guardian_for_android_pacybits_fut_19.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_off0000f782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF782 5128 bytes
SHA-256: 48919a07ddf850f216eade55b42a253b0aff3c5ed340663fdf9f1294b129a099
font_01_sfnt_off000108e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E5 10748 bytes
SHA-256: 04f78688dcce6e65f1f5c0483e9dae3a0f9ea1a73a8f97cf506c10e133edd434