Malicious PDF — malware analysis report

Static analysis result for SHA-256 99c9ff2f5a71831b…

MALICIOUS

PDF

140.6 KB Created: 2022-05-31 22:06:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: b8992035fd6eeaa41afab40b4992bf70 SHA-1: b89fff1d628a53d0c7bfa492079a3954eb3d710a SHA-256: 99c9ff2f5a71831b3e303ab311af0bc5142344c39f7cb985597c166e4f35a822
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous external links, many hosted on disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and external links are indicative of techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

Heuristics 6

  • 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 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.
  • 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://ragaz.co.za/YmrXLWy8?keyword=massey%20ferguson%20165%20parts%20manual%20pdf%20%20windows%207 PDF link annotation
    • https://pegujugadul.weebly.com/uploads/1/3/1/6/131637136/16c92a38a.pdfIn PDF document text
    • https://remenogabeta.weebly.com/uploads/1/3/4/0/134012297/4036092.pdfIn PDF document text
    • https://zuvivesu.weebly.com/uploads/1/4/1/2/141297659/1290136.pdfIn PDF document text
    • https://karifizamazo.weebly.com/uploads/1/3/1/3/131383674/raduneso-bubadiv-jetugolapozor.pdfIn PDF document text
    • http://beiwendq.com/data/attachment/file/37321459708.pdfIn PDF document text
    • https://tolikulisufaro.weebly.com/uploads/1/4/1/5/141522533/4640436.pdfIn PDF document text
    • http://a2kat.ru/userfiles/file/vodavexodebijesok.pdfIn PDF document text
    • https://etonbio.com/newsLetters/images/file/dekozexej.pdfIn PDF document text
    • https://arabadvertise.com/userfiles/files/23470416519.pdfIn PDF document text
    • https://wukogubud.weebly.com/uploads/1/4/1/2/141278761/8bf7e007757a.pdfIn PDF document text
    • https://kecweleri.kendalkab.go.id/kcfinder/upload/files/57764027491.pdfIn PDF document text
    • https://zegepefuloruwan.weebly.com/uploads/1/3/4/0/134012378/xowukezepuxafoneba.pdfIn PDF document text
    • https://mevujigajoje.weebly.com/uploads/1/4/1/2/141258371/33ccc79e005.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

Related samples 2

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
font_00_sfnt_off0001c09e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1C09E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001d8b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1D8B0 17924 bytes
SHA-256: 26d6a33fc9e0ec254e9b1d0586f676ef54ffcc3240fe38711ccb24003a54eace
font_02_sfnt_off00020840.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20840 11540 bytes
SHA-256: 2318a61d1cd1192d9bf84d2dba9bb422c78760588435b9dff54b14b2ff3bb6c7

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