Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf12876091a05177…

MALICIOUS

PDF

81.5 KB Created: 2021-03-14 18:02:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a27dcb3ab10d60f61e15461a5e4f05de SHA-1: 084496ff2ac4568c3e677f28821def96721be931 SHA-256: cf12876091a051778209694f9ceb3ffad141a09ab9107992d4df2f87275a74db
126 Risk Score

Malware Insights

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

The PDF file contains a heuristic indicating it's a link farm on disposable hosting, with a primary URL pointing to a suspicious domain. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware delivery. The document body, though partially garbled, includes a movie title lure and references wkhtmltopdf, suggesting it's a crafted document designed to entice clicks to malicious URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9949

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=ver+cazadores+de+sombras+pelicula+completa+en+espa%25C3%25B1ol+latino+gratis PDF link annotation
    • http://galosidijixiwu.mypressonline.com/81813323385.pdfIn PDF document text
    • http://sibogufurab.medianewsonline.com/amazing_english_1_student_s_book.pdfIn PDF document text
    • https://cdn.sqhk.co/marivefigus/iaQjd5W/reader_s_guide_to_essential_skills_profiles.pdfIn PDF document text
    • http://nizuloxodiza.iblogger.org/jivexemikurotagoxozewim.pdfIn PDF document text
    • http://padojuputiki.iblogger.org/24320387294.pdfIn PDF document text
    • https://cdn.sqhk.co/dawolesirip/ygekjeF/the_last_remnant_remastered_changes.pdfIn PDF document text
    • http://sodowetan.mywebcommunity.org/fedex_ground_driver_jobs_near_me.pdfIn PDF document text
    • https://cdn.sqhk.co/mugolino/dgjfZhc/college_house_party_music_video.pdfIn PDF document text
    • https://cdn.sqhk.co/lawikuto/dphinje/17375480132.pdfIn PDF document text
    • http://dekagexagupeje.iblogger.org/19161231099.pdfIn PDF document text
    • http://zitokujamu.mypressonline.com/78242615721.pdfIn PDF document text
    • http://fexevewuli.mypressonline.com/34516024337.pdfIn PDF document text
    • http://mubarominufu.iblogger.org/signals_systems_and_transforms_5th_edition_solutions_manual.pdfIn PDF document text
    • http://tipatav.22web.org/duwivejalunusid.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/niwotipugonuvoz/marriage_anniversary_greetings_free.pdfIn PDF document text
    • http://pabisuf.epizy.com/functional_programming_tutorial_point.pdfIn PDF document text
    • https://d525ee04-2a40-494f-8ba9-fee52f7b18ee.filesusr.com/ugd/8b8e24_921dbab8a06d4f39894413e04307ed45.pdf?index=trueIn PDF document text
    • http://muwojes.epizy.com/dafiniduda.pdfIn PDF document text
    • https://ae8c1479-5121-4009-b0ed-8259dbb1205b.filesusr.com/ugd/0aff45_0e216e08ba8845e4a7fc8e1b0e62e22e.pdf?index=trueIn PDF document text
    • https://35b1a599-9f45-4897-82ce-59a931fc5495.filesusr.com/ugd/daca0d_ef9adbb8a09f4f6482c7fa4ced2daf25.pdf?index=trueIn PDF document text
    • https://abaaaae4-9231-44fc-b12c-ad55ebcc68e7.filesusr.com/ugd/2ca09c_c592a04e24c34f14b63f15359960e1a8.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/zidosozawok/pisiform_carpal_bone_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/timeziso/road_signs_test_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kisagoz/78008353343.pdfIn PDF document text
    • http://xizujibonow.epizy.com/alcohol_en_gel.pdfIn PDF document text
    • http://derekage.epizy.com/bapiresupunebajadojoza.pdfIn PDF document text
    • https://s3.amazonaws.com/panalipolifod/browser_android_con_plugin_flash.pdfIn PDF document text
    • https://a72b158e-cead-41d6-a0b3-8518216316a4.filesusr.com/ugd/35c6e2_c87f68c4d7bc426c87e0e28ad4fb5257.pdf?index=trueIn PDF document text
    • http://tedivepi.epizy.com/format_factory_filehippo_pc.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_off0000efa1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFA1 5760 bytes
SHA-256: 054cdf6ca6a44774ce5910b2ecfcbdd2ce843017d0b110fc3d09d97a69a9dc9d
font_01_sfnt_off000102e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102E3 2080 bytes
SHA-256: 312219753f3408ef35343611a0f5fb07e4c4fc97ebd7c466f3de94c479665445
font_02_sfnt_off00010ca8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10CA8 12056 bytes
SHA-256: 3277ade23a5c688273d9ac2d66b4e1cc8487557af83764eb7d5263756fcf32a3

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