Malicious PDF — malware analysis report

Static analysis result for SHA-256 17fcf6776b1adb2b…

MALICIOUS

PDF

76.8 KB Created: 2021-03-10 01:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f5949e8eb4cf420597e8eb40e2aeb6ec SHA-1: 756240c0b220b1fecaff72dd54744106ddc8e00a SHA-256: 17fcf6776b1adb2b590d2b8b1c788c8c213aaad1033e194add286793b8cc437c
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 and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are indicative of a common phishing lure, likely designed to redirect users to malicious sites for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://resalured.ru/award?keyword=morrisons+cafe+menu+pdf PDF link annotation
    • https://cdn.sqhk.co/mokabawimav/gibJXra/cops_and_robbers_mine_mini_game.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/nora_roberts_the_awakening_trilogy_book_2.pdfIn PDF document text
    • https://cdn.sqhk.co/juzivadareka/iaIfiyx/mepadumob.pdfIn PDF document text
    • http://xumegexujarev.22web.org/16263142964.pdfIn PDF document text
    • http://jedilinosur.mywebcommunity.org/zepagukopogani.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417808/normal_5fd324b6a356b.pdfIn PDF document text
    • https://cdn.sqhk.co/muribirigim/RQjjzhh/voltage_drop_definition_in_urdu.pdfIn PDF document text
    • http://bofajazikevag.22web.org/2044900315.pdfIn PDF document text
    • https://cdn.sqhk.co/megodiwe/gj0vghZ/among_us_hack_mod_apk_ios.pdfIn PDF document text
    • http://peteferix.mypressonline.com/jamaica_images_clip_art_flowers.pdfIn PDF document text
    • http://ruvujagefeko.mygamesonline.org/xamawusepolojoruwaluwep.pdfIn PDF document text
    • http://maxidadikegi.iblogger.org/sexujev.pdfIn PDF document text
    • http://boraguw.medianewsonline.com/feature_comforts_heater_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/vejurumilef/f6hbihw/37642795324.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470681/normal_6011f27f479a5.pdfIn PDF document text
    • http://pukujadud.getenjoyment.net/why_did_montresor_decide_to_kill_fortunato.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471481/normal_5fdd86cf27f4f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://92ddf5cc-4ce7-4caf-b117-8241c553a727.filesusr.com/ugd/42bae0_9c0a3f9162e34a51999a8bd69c50d27c.pdf?index=trueIn PDF document text
    • https://0621cc9e-6449-4e8a-a8bd-baee9ad62a2c.filesusr.com/ugd/affb4a_e29acd7dc23a4bdab0251f11453d94bc.pdf?index=trueIn PDF document text
    • https://6c036dbd-b327-4678-b778-de8a2ee7bb50.filesusr.com/ugd/ed64d2_bf0d4e73cd8542e2a35dec054580d24d.pdf?index=trueIn PDF document text
    • http://bajupigirosinaf.atwebpages.com/skewness_coefficient.pdfIn PDF document text
    • https://a001dc82-f31e-4944-9b76-0a8e602b6855.filesusr.com/ugd/e4ee87_1ee61da29bc449ee91abd3bd8c6233a1.pdf?index=trueIn PDF document text
    • http://vumamuv.myartsonline.com/sofoxulifu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e24e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE24E 5076 bytes
SHA-256: e3d2f86f4c64b05486806f527aa07dc96d2c31d23895d722f556ff5129d3dbae
font_01_sfnt_off0000f370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF370 10492 bytes
SHA-256: 3a2d4606a09022a84a9a6867952fd7c6e26ed2920b9d716c95ec715186198e0f
font_02_sfnt_off0001178b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1178B 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e