Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e60d34d3feaddce…

MALICIOUS

PDF

101.7 KB Created: 2021-03-20 11:55:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: f2af4ce2d2a8fdc5d2448f65d8ffab92 SHA-1: 8521fdbcf13bbad4c128ebd82ebbe6af48f88452 SHA-256: 7e60d34d3feaddce303bdc0aa5773c75a1085e7f29f1d6341227cdcb2220c501
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 0.9998

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://leonvi.ru/wix?keyword=hoja+de+respuestas+examen+del+capitulo+6a+answers PDF link annotation
    • http://gukivuzijisuva.getenjoyment.net/97852802644.pdfIn PDF document text
    • http://kunewalijaxuna.getenjoyment.net/numpy_multivariate_normal.pdfIn PDF document text
    • https://cdn.sqhk.co/dodagirojep/c7LG1hg/28553789719.pdfIn PDF document text
    • http://heliusdesign.ru/77257416531cfdev.pdfIn PDF document text
    • https://cdn.sqhk.co/baxemazisod/icxhiHh/12193105736.pdfIn PDF document text
    • http://artyom.guru/how_to_check_flame_sensor_on_lennox_furnaceg89sr.pdfIn PDF document text
    • http://meetporte.xyz/climate_change_report_2019_cdprpzht.pdfIn PDF document text
    • http://feroxezoralezuk.iblogger.org/nuxigara.pdfIn PDF document text
    • https://cdn.sqhk.co/tamejenonisi/Ujgyhdw/60012781518.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://petosepiwerufuv.rf.gd/28103713402.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/56507aad-41aa-4d4c-ac06-6c039a08948e/difference_between_bacteria_and_virus_structure.pdfIn PDF document text
    • http://wuwedilejom.myartsonline.com/32506664770.pdfIn PDF document text
    • http://ditejadidoxe.epizy.com/command_and_conquer_zero_hour_maps.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c69ef3ad-7d60-42d4-bd64-9daa853b6b88/93693267658.pdfIn PDF document text
    • https://7095e710-59ac-4d27-8a5a-f3bbcaf65deb.filesusr.com/ugd/418e76_3a3303921e03422497187711c3a9091c.pdf?index=trueIn PDF document text
    • http://wawutanow.epizy.com/liturilino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5cd3dd52-4100-4a4d-aa60-2ccbe9b27dda/how_to_sync_remote_to_hunter_ceiling_fan.pdfIn PDF document text
    • https://db6d201d-bdff-4648-9982-d9cfaac7639e.filesusr.com/ugd/98857b_3a56a3c227e14273a87ab188c84cb671.pdf?index=trueIn 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001553e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1553E 5572 bytes
SHA-256: 8f0dc3f7f25deea05d5b76b6c423b6fdcf6b0b0bf8e8b4e9d90c47a0c0943d9a
font_01_sfnt_off00016834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16834 9824 bytes
SHA-256: f6db1514acac66ce0efe46d92e0974fb34fe406d7dbc1fbf9100623d4ffc083c

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