Malicious PDF — malware analysis report

Static analysis result for SHA-256 9f09be4d2a32821d…

MALICIOUS

PDF

78.9 KB Created: 2021-05-27 21:29:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 7d7e33887b05277ae9d12bc61e0d3446 SHA-1: b7de03751cb631d650c1c4f6c680b917816bc0a8 SHA-256: 9f09be4d2a32821d659931938cbddfaf10a347e8d74a4788bd76fcbbacd4f779
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 0.9995

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 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://resalured.ru/strik?utm_term=connect+yeti+mic+to+iphone+11 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4427282/normal_5ff4b8878acf4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386842/normal_5ffc1648b6fa1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491439/normal_602a4c0cc8875.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420747/normal_60239e2c00c95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388412/normal_6037822c9b7cb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464870/normal_603a7e74399c1.pdfIn PDF document text
    • https://korisupugi.weebly.com/uploads/1/3/5/3/135308649/supobuxeditakidis.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412607/normal_5fddcf0746ea0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405194/normal_5fe1f59b6fc9c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378386/normal_606ea3494cc03.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4487386/normal_60038d672b56c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483589/normal_604a196af2c45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369655/normal_5ffa9601255a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366018/normal_605f58fb34d97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483587/normal_6011b89eb0776.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491936/normal_600b65a78e178.pdfIn PDF document text
    • https://pabelazulutibus.weebly.com/uploads/1/3/1/0/131070827/ee8ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372101/normal_600dfdbf1b19f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417643/normal_60417665ace21.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5ff4852ba8720.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366354/normal_5fc5c249d07bc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377120/normal_5fd82a80e3f2d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000ef2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF2B 4716 bytes
SHA-256: a0d4d9878b3a1beb87cdecc9c1a8d0189c32df255c8b5716114f0321fb602774
font_01_sfnt_off0000ff17.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF17 2484 bytes
SHA-256: 8085e85f7ab2ec424f2d1e8603e5adaf13eeac0702cda241d6a7218dd8b8c71c
font_02_sfnt_off000109b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109B9 10624 bytes
SHA-256: 8a6a521c79458048c0dfd99f543a4fbf49f35f40aadd44895de34c463a20738a

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