Malicious PDF — malware analysis report

Static analysis result for SHA-256 07f4aed3fbce3c55…

MALICIOUS

PDF

77.7 KB Created: 2021-05-08 21:46:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 979ce6078b7259f82d9d55170bad66a6 SHA-1: cfbda4376c312c490caabadccc56411c129d1fce SHA-256: 07f4aed3fbce3c55d8b96e57ecd0c6e05ff28fbb3a589b9781504c48b0a25ab2
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 0.9997

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://soxebez.ru/strik?utm_term=decision+tree+matrix+template+excel PDF link annotation
    • https://cdn.sqhk.co/tasokuxu/ig7icak/beholder_meaning_espanol.pdfIn PDF document text
    • http://viwowiziboso.22web.org/valentine_s_day_card_printable_templates.pdfIn PDF document text
    • https://cdn.sqhk.co/gegefemorosu/fOFfgiA/xumivujufane.pdfIn PDF document text
    • https://cdn.sqhk.co/lukisebeka/yifgcjh/manual_across_the_fountain_ribbon_skate_3.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://likutolejit.onlinewebshop.net/drawing_line_graphs_worksheets.pdfIn PDF document text
    • http://vuzuwukef.atwebpages.com/immunoglobulins_types_and_functions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39669468-856c-42b6-af44-3175553bc7b3/beatles_here_comes_the_sun_ukulele_tutorial.pdfIn PDF document text
    • http://kakininutopojub.rf.gd/43400317016.pdfIn PDF document text
    • http://fuvamawijivef.atwebpages.com/planos_de_casas_modernas_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/tuxenipup/wabuwuzufamoxuzozikam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/69368990-0ac7-4295-b4cd-f83ba492be57/wuruvasukizubajesawawop.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc921958-d0c1-4308-8519-49deae9f7fdf/bright_line_eating_cookbook.pdfIn PDF document text
    • https://s3.amazonaws.com/tuzakifezara/3d_car_tuning_program.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe4ab46b-b828-472f-9eae-827446aaad71/91542264631.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97bfe5e3-0a1a-4196-aefc-8d4963ea6836/50547241022.pdfIn PDF document text
    • https://s3.amazonaws.com/dejolavubukugeb/lobebo.pdfIn PDF document text
    • http://sopavitagokowa.rf.gd/dalajulesenapotipelaxiz.pdfIn PDF document text
    • https://s3.amazonaws.com/rizijubovapuk/tibemoxodunufadasebukufem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1f99d31d-4d6b-4472-a69e-f3c017555cf0/how_to_build_an_indoor_soccer_facility.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a3b264e-9664-4996-9faa-af4d91f6137f/59444372737.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_off0000f25f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF25F 5148 bytes
SHA-256: 4c81454911da9a15db4ce036c40b0fd73b8369b0a27334c6aba09493a3b0ebe2
font_01_sfnt_off000103d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103D1 10640 bytes
SHA-256: 42be7f1b9135f828d8af7c00dcd3aa33759a62f1932f9f328da493ee397d288e

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