Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f82c9e6915fa793…

MALICIOUS

PDF

384.5 KB Created: 2021-05-29 23:34:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 20fdf1e7c10593e2a913b9b33b6e2a97 SHA-1: 1f2de957e3849bce95cde928dbfd940fa565df65 SHA-256: 7f82c9e6915fa7932dd8c17b5161b6461be08609deb44f9990ed19f81e364270
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file contains an embedded URL that leads to a suspicious domain, identified by heuristics and a machine learning classifier as malicious. The document body, though heavily obfuscated, contains text related to divisors and the authoring application, suggesting a lure to a phishing or scam website. No scripts were extracted, but the presence of an external URI and the ML classification strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8636

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://zajinet.ru/strik?utm_term=cuales+son+los+divisores+de+1241 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4380210/normal_60292ea737a9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447915/normal_60583094e7e92.pdfIn PDF document text
    • https://mifanupomiseri.weebly.com/uploads/1/3/2/6/132681757/603428.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466173/normal_5fe9f956738f7.pdfIn PDF document text
    • https://kuwevezutasozif.weebly.com/uploads/1/3/0/9/130969868/susowafupafejol-lixixudeli-wubepevonu-zovezawuput.pdfIn PDF document text
    • https://webuwexuzebonal.weebly.com/uploads/1/3/0/7/130775053/2fa3f5cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470387/normal_6044cef2bc5ab.pdfIn PDF document text
    • https://sedemosifov.weebly.com/uploads/1/3/0/8/130874126/7728689.pdfIn PDF document text
    • https://lodotimafigu.weebly.com/uploads/1/3/5/9/135981467/pufelovokajapanufo.pdfIn PDF document text
    • https://static.s123-cdn-static-d.com/uploads/4393506/normal_60b11852a8c6d.pdfIn PDF document text
    • https://xuxuratedagofat.weebly.com/uploads/1/3/4/6/134644764/0115317.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464521/normal_6051c8484fef5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4476281/normal_5fdcb17663edd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393755/normal_60170e6622f47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4462993/normal_602351046bd42.pdfIn PDF document text
    • https://ruxoworajesuz.weebly.com/uploads/1/3/4/3/134387888/rinav.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472775/normal_60091807848cf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451555/normal_60501de8afa0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414502/normal_60447334b8fd8.pdfIn PDF document text
    • https://figejarorosuwe.weebly.com/uploads/1/3/4/4/134433037/3620777.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470412/normal_600b2f3eba9e5.pdfIn PDF document text
    • https://wamibujobaju.weebly.com/uploads/1/3/4/7/134716207/majigisanexetat_gelofe_taran.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/47955041-c922-40d5-a753-da5a0c905aed/integrated_chinese_level_2_part_2_workbook_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63372dd7-c7cc-401b-b7e1-7f33eee1ad46/sennheiser_rs_175_rf_wireless_headphone_system_review.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

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_off0005b99c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B99C 5056 bytes
SHA-256: 3fe294344852bd8cc2ba9d82705acb043b55a228c354c009453eaa353798fa24
font_01_sfnt_off0005cae8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CAE8 10924 bytes
SHA-256: fe4605469ce46ec97d3c1d3e964d740305b9f36174a95c0b953526afc6e1ed2a

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