Malicious PDF — malware analysis report

Static analysis result for SHA-256 0edaaf3332a40a87…

MALICIOUS

PDF

116.7 KB Created: 2021-01-20 00:25:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f85f52a3a88dd69ba9e628039dab730b SHA-1: bca0366b3f6a8899cea4e1f2dad12f8b11b38241 SHA-256: 0edaaf3332a40a87e13bd190f284059635f9137548b9e3b75f9f54dd4da31a9e
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://jacksth.ru/123?utm_term=love+simon+google+docs+espa%25C3%25B1ol PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4379854/normal_5fa63e38b97fa.pdfIn PDF document text
    • https://site-1223593.mozfiles.com/files/1223593/videoder_for_pc_32_bit.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368745/normal_5f90d55927bfc.pdfIn PDF document text
    • https://jetorijeroxu.weebly.com/uploads/1/3/4/6/134693882/kuxexaliraforasetod.pdfIn PDF document text
    • https://site-1168018.mozfiles.com/files/1168018/78161039880.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4468871/normal_5fec9abd1c48e.pdfIn PDF document text
    • https://kozowesojufeg.weebly.com/uploads/1/3/4/7/134717080/14baf1.pdfIn PDF document text
    • https://site-1180908.mozfiles.com/files/1180908/trophy_tracker_clash_royale.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368226/normal_5ffcd6d65eadf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407664/normal_5fc7ff55d05f5.pdfIn PDF document text
    • https://babotiditufo.weebly.com/uploads/1/3/4/6/134694550/melul.pdfIn PDF document text
    • https://bupulaserora.weebly.com/uploads/1/3/1/4/131437689/rekorumo_sonelow_kivusidit.pdfIn PDF document text
    • https://site-1179952.mozfiles.com/files/1179952/74065802074.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499329/normal_6003e742aa0ae.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452161/normal_60011fae311d0.pdfIn PDF document text
    • http://bixuvetojotenes.22web.org/49294598594.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lemijafuw.epizy.com/gukiburulubujowilabuxupon.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://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00018d59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x18D59 30360 bytes
SHA-256: 391b351cb63c919b6b6ae3e7b0e545aa9471850d28a4658573827582ecbc77f8
font_00_sfnt_off00015155.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15155 5512 bytes
SHA-256: 00607e14a75fe666429419ba1f902b6801589a02acb74eb25a928cdd15678e54
font_01_sfnt_off000163cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x163CF 12404 bytes
SHA-256: f96eaac4bb580c6fda3e732f22dc0dc5a81707bee841daec8cdf728428cd0724

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