Malicious PDF — malware analysis report

Static analysis result for SHA-256 60f2d8746ee9b932…

MALICIOUS

PDF

80.4 KB Created: 2021-04-03 04:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 36fde055676ecc2f5255e2536d6137bf SHA-1: 50ccf25aaaa9496f1cde2bcc4d8e9026a99c2da3 SHA-256: 60f2d8746ee9b93258eeae70f92ed93e1cc375746ff1614382244f6a89494e7d
126 Risk Score

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 0.9998

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://leonvi.ru/wix?keyword=autism+conference+2020+texas PDF link annotation
    • http://detonicufficiale.website/custom_address_book_software_freeojhyb.pdfIn PDF document text
    • http://classkaod.ru/zeronamuvejij45gbo.pdfIn PDF document text
    • http://izzzaaa.space/derokovurupative7a0dl.pdfIn PDF document text
    • http://sozapemogoz.mygamesonline.org/atlantis_aquaventure_map.pdfIn PDF document text
    • https://mowazaxof.weebly.com/uploads/1/3/4/7/134704653/35596.pdfIn PDF document text
    • http://kindraretterath.com/should_you_change_for_someone_you_love_quotesh5nj9.pdfIn PDF document text
    • http://souve.me/gururulesazevycklv.pdfIn PDF document text
    • http://pinerapidsrr.com/jexibagewezujukog5706x.pdfIn PDF document text
    • http://gelumagiz.iblogger.org/worksheet_section_3-2_angles_and_parallel_lines_answer_key.pdfIn PDF document text
    • http://sellforce.ru/zomopogaforowokxrlr.pdfIn PDF document text
    • http://hamsterbig.com/39335958884naai2.pdfIn PDF document text
    • http://pefiworawodud.mypressonline.com/troy-bilt_27_ton_log_splitter_parts_diagram.pdfIn PDF document text
    • http://zatodawu.iblogger.org/cluster_headache_nice_guidelines.pdfIn PDF document text
    • http://tejovotemikodes.getenjoyment.net/79698609493.pdfIn PDF document text
    • https://fugejifok.weebly.com/uploads/1/3/4/1/134132056/732f8851492e9.pdfIn PDF document text
    • https://besikutusesa.weebly.com/uploads/1/3/2/6/132681218/funekerafana_fifiritemiru_gazewoboli_pajadiluz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://zinuforonubas.rf.gd/41756171954.pdfIn PDF document text
    • http://birotizedu.epizy.com/kaspersky_mobile_antivirus_apk_2018_android_key.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_off0000eeda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEDA 5208 bytes
SHA-256: 45bd97193819c0e8a0a9683129d6d5295a3c802f15a5f48b136ac4e37a668d3d
font_01_sfnt_off0001006c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1006C 11356 bytes
SHA-256: 969826744be3532cdefa16ec55d55bccc8de8838840d8945e6c80de5bffa1810
font_02_sfnt_off0001269a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1269A 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f