Malicious PDF — malware analysis report

Static analysis result for SHA-256 118059e4c07fde06…

MALICIOUS

PDF

74.7 KB Created: 2021-03-19 14:11:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: c1c05cbbd1e4da988d0523a98a19c7e1 SHA-1: 0040c113e248151c9c1dfaba140dc2af6db02657 SHA-256: 118059e4c07fde0662506bca0dfc90349fe27561ac607d53ef6de9c9e2769574
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, with a significant portion pointing to disposable hosting and identified as a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of external URIs suggests the document is designed to redirect users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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=personal+barriers+to+communication+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379982/normal_600bbc29575da.pdfIn PDF document text
    • http://bodaweziwov.mypressonline.com/how_to_clean_brazilian_wax_heater.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/59788206236.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486775/normal_5fc9098589364.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411696/normal_5fec1b02858e3.pdfIn PDF document text
    • http://reassurez-moi-fr.info/56907910225rvysq.pdfIn PDF document text
    • http://liwexun.mywebcommunity.org/analytic_geometry_6th_edition_douglas_riddle_free_download.pdfIn PDF document text
    • http://itsamorem.com/1994_chevy_s10_ignition_wiring_diagramrs26a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485589/normal_5fcdd5f7d17ad.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487631/normal_5fe02b0bf1249.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/1ceb7f1f-0a83-46a0-b57e-915d53833b99/saduge.pdfIn PDF document text
    • http://bixodog.rf.gd/numerologia_hebrea_biblica.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/09a09e53-4390-4379-b039-761fb58b8d73/35462423710.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93bbab33-4f97-421b-b3c8-764163a4abec/a_touch_of_power_book_3_jay_boyce.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc240ed4-1707-4bd9-99cf-581366e4a15e/trials_of_apollo_book_2_google_docs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49c51ab4-c7a4-4d18-a9dc-a84a34ad0965/how_to_restart_an_ipod_nano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a2c5eb44-3482-4305-acef-0d882f845318/maths_real_analysis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0769cef-9b0b-44af-92b2-67589ace06d1/how_to_use_apple_watch_gps_for_running.pdfIn PDF document text
    • http://nowimirozox.atwebpages.com/53180074640.pdfIn PDF document text
    • http://nifiloxoburufi.rf.gd/erster_verlust_schumann_sheet_music.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_off0000eaf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEAF0 5444 bytes
SHA-256: f1dd58e67825a679d3b06f0bc977e9a889f37f727e6fde4c0afe3539a9be8889
font_01_sfnt_off0000fd57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD57 9500 bytes
SHA-256: 9dadca8d2de71b75ea9dc220209382901961798471493208e42141444914d98c

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