Malicious PDF — malware analysis report

Static analysis result for SHA-256 5968e1dc012a09ec…

MALICIOUS

PDF

67.3 KB Created: 2020-12-23 06:51:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3ebb62298bca1632a9d295c429f4f452 SHA-1: 1ba4ecb967ff22b91f7ccbf23af0098ea6daa912 SHA-256: 5968e1dc012a09ecfccd75e150c68ded6a95447515d625d0bd82867568839caa
164 Risk Score

Malware Insights

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

The PDF file contains numerous external links, a technique often used for SEO manipulation or to host malicious content. One prominent URL, 'https://traffset.ru/strik?utm_term=princess+makeup+salon+game+download+in+jio+phone', appears to be a lure for a game download. The presence of a PDF link farm and ClamAV detection as 'Pdf.Phishing.Trojan' strongly suggests a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://traffset.ru/strik?utm_term=princess+makeup+salon+game+download+in+jio+phone
    • https://static.s123-cdn-static.com/uploads/4375703/normal_5fc5672a281cc.pdf
    • https://static.s123-cdn-static.com/uploads/4450037/normal_5fc7ecdbf21c2.pdf
    • https://cdn-cms.f-static.net/uploads/4409413/normal_5f961de150d1d.pdf
    • https://cdn-cms.f-static.net/uploads/4401983/normal_5fa400f78f443.pdf
    • https://cdn-cms.f-static.net/uploads/4379489/normal_5f9760232caaf.pdf
    • https://fufiganegobugu.weebly.com/uploads/1/3/4/4/134496384/6445438.pdf
    • https://cdn-cms.f-static.net/uploads/4489595/normal_5fb52140879c9.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://uploads.strikinglycdn.com/files/b6675865-9c82-48eb-bb03-6cf416868ca6/jebasozazadexomikoxasi.pdf
    • https://s3.amazonaws.com/mefadedosuw/lanxess_ag_annual_report.pdf
    • https://s3.amazonaws.com/zevutebulaworel/format_usb_drive_bootable_windows_7.pdf
    • https://uploads.strikinglycdn.com/files/3b7ab042-b9a2-43e0-ab16-472818a5631f/64208608117.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c9ea.bin
54eb4bff8f11f388b07e222ec6884da4e72fbb0aa5be68d2cd5a9a3b68b6ca41
pdf-font-stream PDF embedded font (sfnt) at offset 0xC9EA 5720 bytes
font_01_sfnt_off0000dd46.bin
1be237de179100f03e75527f17bca609dbe8854c353c893959cd06df9e956c2d
pdf-font-stream PDF embedded font (sfnt) at offset 0xDD46 10292 bytes