Malicious PDF — malware analysis report

Static analysis result for SHA-256 445a74113418d340…

MALICIOUS

PDF

75.3 KB Created: 2022-03-26 11:04:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-12
MD5: 5dbbe2fd923d092f1f7e0e4715cd0387 SHA-1: 40f280084490c893d059549e8401bfc11ff39dfc SHA-256: 445a74113418d3405a8cabd23bbc5b0e6b4e696b396aaf5afa6687da769987cb
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many pointing to Weebly-hosted PDFs, indicating a link farm. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or distributing further malware. The primary URL, https://cafij.co.za/YmrXLWy8?keyword=four%20freedoms%20speech%20purpose, appears to be an initial lure directing to this network of malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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.
  • 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://cafij.co.za/YmrXLWy8?keyword=four%20freedoms%20speech%20purpose PDF link annotation
    • https://jivikusobule.weebly.com/uploads/1/3/5/3/135326696/a5df43cdca8afe.pdfIn PDF document text
    • https://bopenuxot.weebly.com/uploads/1/3/4/6/134667357/8721388.pdfIn PDF document text
    • https://sazunanul.weebly.com/uploads/1/3/4/4/134488017/393d4c32bf.pdfIn PDF document text
    • https://gibekadizekuni.weebly.com/uploads/1/3/1/4/131452913/7a20e6be935bd3f.pdfIn PDF document text
    • https://tupokigefadewun.weebly.com/uploads/1/3/4/7/134702618/nafedizavogiwoboropo.pdfIn PDF document text
    • https://duxegebipuvakij.weebly.com/uploads/1/3/4/0/134095857/4300734.pdfIn PDF document text
    • https://fisezofibidan.weebly.com/uploads/1/3/4/3/134316577/8299a790cd.pdfIn PDF document text
    • https://fitimunelesim.weebly.com/uploads/1/3/4/9/134900430/gezifik-wegot-defug-gejazoduruzizit.pdfIn PDF document text
    • https://jivupofa.weebly.com/uploads/1/3/1/4/131406879/sovejofanipuwi_tomaxekotik_regogivudujobo_xivedogonad.pdfIn PDF document text
    • https://tibagikusutugox.weebly.com/uploads/1/3/0/7/130775046/62f58e.pdfIn PDF document text
    • https://befinutu.weebly.com/uploads/1/3/5/9/135971501/wisoguzufu-sifariwiluv.pdfIn PDF document text
    • https://pafekirikigu.weebly.com/uploads/1/3/4/5/134590200/1356529.pdfIn PDF document text
    • https://vanizubifimid.weebly.com/uploads/1/3/0/8/130874516/2636245.pdfIn PDF document text
    • https://satiragekawojiw.weebly.com/uploads/1/3/2/7/132740750/7355a7f.pdfIn PDF document text
    • https://bojuzogonugux.weebly.com/uploads/1/3/5/3/135304036/rurinulupu-linetirexizeg.pdfIn PDF document text
    • https://fanizoliboligom.weebly.com/uploads/1/3/1/0/131070566/bowaso.pdfIn PDF document text
    • https://fuxugunepegox.weebly.com/uploads/1/3/4/7/134761488/parupa-dananapufosot-xosolazuv-gapof.pdfIn PDF document text
    • https://lajakobu.weebly.com/uploads/1/3/4/5/134599687/88ccd7defb496.pdfIn PDF document text
    • https://kusipujetaz.weebly.com/uploads/1/3/4/4/134462876/vumujesure.pdfIn PDF document text
    • https://zimiduninu.weebly.com/uploads/1/3/1/6/131637103/selujozupibuse.pdfIn PDF document text
    • https://mevagosulen.weebly.com/uploads/1/3/5/3/135391340/kevaparuma.pdfIn PDF document text
    • https://repamepofasepa.weebly.com/uploads/1/3/1/4/131437198/wulet.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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c628.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC628 10460 bytes
SHA-256: 3ebfe674dade7f0b8369fc28b9bcf0a52a8de2637f0456388aeb185e4d62c415
font_01_sfnt_off0000dddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDDC 16588 bytes
SHA-256: 9d8fcbac63008fd5dedfc6b9ef463f13be17dd00589f4de815f71a55d2a85b5e
font_02_sfnt_off000108e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E8 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336