Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8be313da4d28ec6…

MALICIOUS

PDF

73.5 KB Created: 2021-03-08 19:17:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: b7c408cd504dd43271955dfeafd32a27 SHA-1: 5efc56c87ec33e321646235f4a8f2b6f990d460d SHA-256: e8be313da4d28ec6f2374005c60cd5a88c39636b96a9bb698a27f0da28cc07e9
126 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://fokemale.ru/strik?utm_term=how+to+edit+image+size+in+paint PDF link annotation
    • http://qrettalq.online/washington_state_covid_cases_today6hahv.pdfIn PDF document text
    • http://wiinorama.website/beautiful_in_white_piano_noteshezc4.pdfIn PDF document text
    • http://vanlit.ru/oil_painting_paint_by_numbers_for_adultsvoxkb.pdfIn PDF document text
    • http://dragonflysagewellness.com/pilojaduvazo6s.pdfIn PDF document text
    • http://zetomanebegox.iblogger.org/36042466791.pdfIn PDF document text
    • http://lumacy.site/risakizekedawijesadttzrx.pdfIn PDF document text
    • http://hytri.com/770647223333wu3p.pdfIn PDF document text
    • http://youla-24.cc/2018_bmw_x4_m40i_performancew5pxj.pdfIn PDF document text
    • http://glasshookahcatering.com/naruto_manga_volume_150y371.pdfIn PDF document text
    • http://fametasubub.22web.org/cengage_math_calculus.pdfIn PDF document text
    • http://detonic-shop.website/49846815158vxrmq.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://befejuzawafuv.epizy.com/careers360_magazine_free.pdfIn PDF document text
    • https://s3.amazonaws.com/tumuzu/29477794048.pdfIn PDF document text
    • http://kidogip.epizy.com/iowa_dot_511_road_report.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2184fa89-10a5-4b09-9571-99de4cf037d7/91739160149.pdfIn PDF document text
    • http://dimizisunope.epizy.com/executive_summary_sample_for_report.pdfIn PDF document text
    • http://xerimawiloje.rf.gd/how_do_i_set_my_citizen_eco_drive_world_perpetual.pdfIn PDF document text
    • https://s3.amazonaws.com/pisedij/chilton_s_auto_manuals_online.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/540df4a9-aaf7-4f1d-bad0-7a1d063f055b/46072025257.pdfIn PDF document text
    • http://fujebudavitasoz.epizy.com/80918273956.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/luxugem.pdfIn PDF document text
    • http://borarizi.epizy.com/80988263760.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_off0000e1a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A0 5256 bytes
SHA-256: c22dca5d14cc4427d3f1ba3e171432401ea9ddd7b088bdad72e0bed0cb1816a8
font_01_sfnt_off0000f38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38B 10804 bytes
SHA-256: 8a7e5c7860847c85e5768511704e1807b158d51e7035418ede46b57f92c8390b

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