Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2c06f4a85198f69…

MALICIOUS

PDF

73.8 KB Created: 2021-03-31 20:25:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-07
MD5: bb66d050d1b7980b351123fdb30d60f6 SHA-1: 5ff38e03962f7b7f79b68ac93521b6593ea73f6e SHA-256: d2c06f4a85198f69c0da54a60333abae8e3f207656b3dcdad674467c5a588fe4
126 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing or trojan. It contains numerous embedded URLs, with a primary suspicious URL pointing to 'nipisod.ru'. The document body, though heavily obfuscated, contains text related to 'watching wrestling inc', suggesting a lure to a malicious site. The presence of embedded URLs and the nature of the detection indicate a phishing attempt, likely involving a malicious script or redirect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://nipisod.ru/wix?keyword=watching+wrestling+inc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417141/normal_5fe612a424206.pdfIn PDF document text
    • http://ketenimolupev.sportsontheweb.net/gegonaleweg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451355/normal_604a22c389db7.pdfIn PDF document text
    • https://joxunirefebemi.weebly.com/uploads/1/3/4/3/134319414/fejekojapujuxexip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471249/normal_5ffb4bb771d5e.pdfIn PDF document text
    • https://sejabekozifox.weebly.com/uploads/1/3/4/2/134266090/2251019.pdfIn PDF document text
    • http://dovulup.iblogger.org/46264720675.pdfIn PDF document text
    • http://didopikorubozav.iblogger.org/ahlers_ag_annual_report.pdfIn PDF document text
    • http://siwivelijutore.medianewsonline.com/danby_50_pint_dehumidifier_with_pump_setup.pdfIn PDF document text
    • https://lagomumudalo.weebly.com/uploads/1/3/2/6/132681699/961193.pdfIn PDF document text
    • http://labanom.22web.org/94018530320.pdfIn PDF document text
    • http://pozezan.mygamesonline.org/pdf_antidumping_manual.pdfIn PDF document text
    • http://xusatekekosigi.iblogger.org/hillsong_worship_songs_mix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460944/normal_5ff5781220528.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://67a4337f-2b79-4d04-9c1d-2578c80f4945.filesusr.com/ugd/964009_62c6f7fa37fd45d997c85156bc538aef.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/f6c38224-4634-4caf-9440-f520952dac38/8020550106.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4aeddacd-535f-471b-a928-4f6dd31c577f/stop_caretaking_the_borderline_or_narcissist_audible.pdfIn PDF document text
    • https://a3de454e-1598-42bb-a259-4eb69c42f179.filesusr.com/ugd/fb5067_05dfe18451b24d65ab37c76e4a577821.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/34d549cd-0f8c-4ff1-b59c-3edd8f00818e/hp_elitedesk_800_g1_mini_i5_specs.pdfIn PDF document text
    • https://457cefd1-268f-49c0-9ca4-ced5ac281e6b.filesusr.com/ugd/983758_f5d2aeadf1434de483bcc88b232caa79.pdf?index=trueIn PDF document text
    • https://e966359d-176b-477a-9ad9-c314bea94227.filesusr.com/ugd/fa6f14_7fec390ca5e9481ca5622318f9f4878a.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d49c59a-798f-48cc-8402-84408e41e191/ada_mp_1_mod_4_mkii.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_off0000daf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAF3 5168 bytes
SHA-256: 37ab3482da21f78aeda32edbd9f504bb1e693be7fb403e5ecc8f18b70ba5d431
font_01_sfnt_off0000ec92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC92 2144 bytes
SHA-256: ff6f50938146b34ab7d9aa472a0f0df7788fcca6f78c97d2a490c66771d8d684
font_02_sfnt_off0000f651.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF651 10260 bytes
SHA-256: f0e017108977a2f4d620cbaada99b5b5d63c7103849e4a0ecaa632422c6318bb