Malicious PDF — malware analysis report

Static analysis result for SHA-256 4de03a23716135b5…

MALICIOUS

PDF

72.9 KB Created: 2021-02-18 22:10:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 918e3706eecb661dd0f3fcfce02da64c SHA-1: d3e6ebb7b1a972f2647a9b437045a508d7522154 SHA-256: 4de03a23716135b599eea8c6ae534509f2cbd81c9202aa722a1aba6989a53aa8
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/wix?keyword=v+buck+generators+no+human+verification PDF link annotation
    • https://cdn.sqhk.co/wajidafix/bgfqMjd/amazon_fire_tablet_sales_figures.pdfIn PDF document text
    • https://cdn.sqhk.co/xisalaximel/EVjiigY/wogolupaxotuwogokukudukam.pdfIn PDF document text
    • https://cdn.sqhk.co/nuroteditu/a53jjij/fexarejofifaj.pdfIn PDF document text
    • https://kekisuganuzab.weebly.com/uploads/1/3/4/7/134721312/555c7d821f10e2.pdfIn PDF document text
    • http://ericksandoval.com/brilliant_pala_answer_key_neet_2019kkl98.pdfIn PDF document text
    • https://povemiloten.weebly.com/uploads/1/3/4/6/134608376/pipanaxiju-sadejefule-pumilavaposi.pdfIn PDF document text
    • https://revunipaletofux.weebly.com/uploads/1/3/0/8/130874393/6257454.pdfIn PDF document text
    • https://cdn.sqhk.co/zubavagi/gixgdgi/miralax_for_cats_how_long_to_work.pdfIn PDF document text
    • http://copyrightsupporteds.com/kung_fu_hustle_landlady2wrfk.pdfIn PDF document text
    • http://fallofelin.online/how_are_you_today_interview_answersfm966.pdfIn PDF document text
    • http://xijafagupigor.22web.org/astm_b117.pdfIn PDF document text
    • http://frankiearvelo.com/1236996493pn8tr.pdfIn PDF document text
    • https://cdn.sqhk.co/woxiwovar/igjhjhL/lost_echo_resonance.pdfIn PDF document text
    • https://cdn.sqhk.co/mujawiru/diggeHs/5626025084.pdfIn PDF document text
    • https://minaraxu.weebly.com/uploads/1/3/4/7/134765114/wamupis.pdfIn PDF document text
    • https://cdn.sqhk.co/purorelaz/hg9giaI/34070735703.pdfIn PDF document text
    • https://cdn.sqhk.co/pezolaje/hcghUja/82895637234.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vutafinaragod.rf.gd/naselezulafonazugozeruvaw.pdfIn PDF document text
    • http://kozitoxezafovi.rf.gd/apache_nifi_1._5.pdfIn PDF document text
    • http://zisafaziga.epizy.com/college_algebra_for_dummies_cheat_sheet.pdfIn PDF document text
    • http://ritifijetib.rf.gd/human_virology_5th_edition.pdfIn PDF document text
    • http://tirevotijo.epizy.com/22792454042.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/mixavatoladinurobawoxe.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_off0000d511.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD511 5492 bytes
SHA-256: 7ab5de24a80dbe436e048c544abc5f1070dbdc8ddfac670b5faa893dc6916a65
font_01_sfnt_off0000e7a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7A2 2092 bytes
SHA-256: 6e5de5c6bcb7fdd8c5ca0d25823a8f80e6c764803c1b732dbc9c425a5c0f8ea5
font_02_sfnt_off0000f148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF148 10672 bytes
SHA-256: f73ffcca021417b4e88cd388460814079340509bb15bf853b1e9c58d04684307