Malicious PDF — malware analysis report

Static analysis result for SHA-256 de2774656962c54c…

MALICIOUS

PDF

92.7 KB Created: 2021-03-09 02:57:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 77d6b5bb5e9778469b282f09c0ba24d7 SHA-1: d61b03a42d4d6f7c626f5ddab9fdf6ac039fb4be SHA-256: de2774656962c54cef8e37f501705c87080d531b290727993f77d5116fd47d7b
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to disposable domains, many of which are flagged as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or a scam. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to malicious content, potentially leveraging a PDF exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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://fokemale.ru/award?keyword=animal+crossing+new+leaf+prima+official+game+guide+pdf+download PDF link annotation
    • http://cleanup-sale.site/joker_movie_mp3_songs_free_downloada00ov.pdfIn PDF document text
    • http://dadofavelobetuv.iblogger.org/tejenenepubam.pdfIn PDF document text
    • http://phtech.site/my_dyson_brush_has_stopped_spinningqx99y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463286/normal_5fca92285cf90.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456998/normal_5ffc4767a58f8.pdfIn PDF document text
    • http://wojisub.mypressonline.com/45811838165.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4390324/normal_5ff8535eeac36.pdfIn PDF document text
    • http://vixidijogaritix.22web.org/critical_theory_dictionary.pdfIn PDF document text
    • http://jotusimemirido.sportsontheweb.net/what_is_foil_in_literature.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414164/normal_6032ef2240328.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380691/normal_603b2ca56b2c8.pdfIn PDF document text
    • http://posurazatux.mypressonline.com/45164530220.pdfIn PDF document text
    • http://edarudost.online/xetilabafegazanafurukalosfc5z.pdfIn PDF document text
    • http://podarokinsta.online/tovuwibokodedukomesaxovar6udwp.pdfIn PDF document text
    • http://zuvixomajav.22web.org/89904042936.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pevipitoz.atwebpages.com/final_fantasy_1_strategy_guide.pdfIn PDF document text
    • http://tuvugagud.epizy.com/web_to_chrome_addon.pdfIn PDF document text
    • https://8eeb1f0a-0cdd-4c66-98a4-83777b49fb54.filesusr.com/ugd/64f9d2_eb5d53c759194923a70c20bab48f30db.pdf?index=trueIn PDF document text
    • http://nukilaba.myartsonline.com/4647196193.pdfIn PDF document text
    • https://a91873a8-1f5b-4151-915d-af39eb211f25.filesusr.com/ugd/3f80ec_1d3cac8234d445ae8f343af01179297e.pdf?index=trueIn PDF document text
    • https://b20aee1f-b1b7-4e4e-be5e-d884e4ece670.filesusr.com/ugd/10e3af_f69161e13b7944a483c318708fcf28d3.pdf?index=trueIn PDF document text
    • http://xiromenabagagi.rf.gd/13247962078.pdfIn PDF document text
    • http://wawukekaxemiju.epizy.com/how_to_install_gta_5_mod_menu_ps4_online_2020_usb.pdfIn PDF document text
    • http://dinixebun.epizy.com/adobe_premiere_slideshow_template_free.pdfIn PDF document text
    • https://7aff118d-26f6-4d76-9bc9-1838009e7274.filesusr.com/ugd/f80014_d8be92c2b4b143509db14e48ce4c00ed.pdf?index=trueIn PDF document text
    • https://e85625e8-91d5-48c2-95a4-67b7b95d5b39.filesusr.com/ugd/b97a97_936055035242463a91f64862b6e7a496.pdf?index=trueIn PDF document text
    • http://rilenipavow.rf.gd/female_clothes_design_template.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_off00012ccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12CCC 5556 bytes
SHA-256: cc8bc387439059520d700f3439ce2d933d35148b339196d0ef21192438c24374
font_01_sfnt_off00013fa6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FA6 10748 bytes
SHA-256: 9c6e198fa84efeb68b9e5768c2ce8c201e09c04c9714407f1861a189a7cd8f1b