Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c35a19d87458aa9…

MALICIOUS

PDF

72.2 KB Created: 2021-03-04 21:05:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bce1491d1558f3eea389972a7e49eada SHA-1: aba33bbba6c9fdc2b9e23ebdf38b8576394bf814 SHA-256: 1c35a19d87458aa979e000a130cdf0bc1498a684a63de684fb3f8c4a9e6ccddf
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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.
  • 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=rhythm+rhyme+results+photosynthesis+crossword+puzzle+answer+key In PDF document text
    • https://zamamuxito.weebly.com/uploads/1/3/4/2/134234866/pafodozovagogurixu.pdfIn PDF document text
    • http://womotov.22web.org/36133721333.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/nanoxa.pdfIn PDF document text
    • https://cdn.sqhk.co/nasubivapu/ibSkCgi/train_controller_gold_manual.pdfIn PDF document text
    • https://cdn.sqhk.co/mewixamok/jfidkji/spinal_stenosis_exercises_for_elderly.pdfIn PDF document text
    • http://sokegex.mywebcommunity.org/python_book_in_hindi_download.pdfIn PDF document text
    • https://cdn.sqhk.co/duponetix/THqmjh6/15833108963.pdfIn PDF document text
    • http://jibozakux.22web.org/love_story_song_piano.pdfIn PDF document text
    • https://cdn.sqhk.co/molivovuki/Kgejejf/vuvexuxobobofironuk.pdfIn PDF document text
    • https://lutomired.weebly.com/uploads/1/3/5/3/135316507/445999.pdfIn PDF document text
    • https://cdn.sqhk.co/temegolu/GjeRpgj/zenajur.pdfIn PDF document text
    • http://sijiwepi.mypressonline.com/46360286485.pdfIn PDF document text
    • https://katalulipof.weebly.com/uploads/1/3/2/7/132710678/d58394618.pdfIn PDF document text
    • https://cdn.sqhk.co/raxuzuvuluf/cja7ijB/jepasenugabunutod.pdfIn PDF document text
    • http://medebupima.sportsontheweb.net/simixesoje.pdfIn PDF document text
    • http://toworugesolur.getenjoyment.net/wheel_of_time_series_date.pdfIn PDF document text
    • https://ponozivodu.weebly.com/uploads/1/3/0/7/130775347/towuwo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://patepuxowibano.rf.gd/numerology_books_free.pdfIn PDF document text
    • http://ratadipemor.epizy.com/11419933306.pdfIn PDF document text
    • http://girofili.myartsonline.com/96649490185.pdfIn PDF document text
    • http://mugazukadum.onlinewebshop.net/how_much_do_detectives_earn_in_south_africa_per_month.pdfIn PDF document text
    • http://xemunebo.atwebpages.com/famazozoxadu.pdfIn PDF document text
    • http://vobikeretuwof.atwebpages.com/5_points_of_darwins_natural_selection_answer_key.pdfIn PDF document text
    • http://vilumepidiwego.myartsonline.com/how_to_cook_rice_in_black_and_decker_rice_cooker_plus.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_off0000dce2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCE2 5628 bytes
SHA-256: ec9b38fe6acf72938b0a20694fb846c70d5b85ab0a505a478fb0b15168796bfe
font_01_sfnt_off0000effc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFFC 10196 bytes
SHA-256: c10d25e6dcb6b14f2c2c5b11d7d2b2dce800bf6c4907858665650aeffb4b54e6