Malicious PDF — malware analysis report

Static analysis result for SHA-256 182c01d64e5e2ce2…

MALICIOUS

PDF

46.6 KB Created: 2020-07-13 23:32:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b2b4e307733f25ee0a5ec22a7b0b9f66 SHA-1: 1208f691fb82c4bc85bed2fe6053bbe782b383b4 SHA-256: 182c01d64e5e2ce230416d653159a888a97caf0e578deefd83905105fceb5b34
214 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with one identified as a malicious redirector. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to redirect users to phishing or malware distribution sites. The presence of embedded URLs and the 'Pdf.Dropper.Agent' ClamAV signature suggest this file acts as a dropper or downloader for further malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.Dropper.Agent-9528081-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9528081-0
  • 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://ttraff.cc/wb?keyword=free%20french%20grammar%20worksheets%20pdf
    • http://files.thenottinghamfour.com/uploads/1/3/2/7/132710628/91040fee.pdf
    • http://files.fanhubnw.com/uploads/1/3/2/8/132815118/moxekiwaniguf.pdf
    • http://files.doulababes.com/uploads/1/3/1/3/131380598/5934a67b.pdf
    • http://files.lacharite.net/uploads/1/3/1/3/131380107/nesapa_sufagasawo_zogujodabujag.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://xawoluvega.files.wordpress.com/2020/07/juzumeloxir.pdf
    • https://texamepup.files.wordpress.com/2020/06/24850818644.pdf
    • https://pufifupafur.files.wordpress.com/2020/07/86701682941.pdf
    • https://rilejeselu.files.wordpress.com/2020/06/wagonon.pdf
    • https://dafowamu.files.wordpress.com/2020/06/41377131919.pdf
    • https://kegozifidido.files.wordpress.com/2020/06/zafanajexanufekiguf.pdf
    • https://xakafuwi.files.wordpress.com/2020/07/12688435097.pdf
    • https://sivobir.files.wordpress.com/2020/07/xexaruxomunufa.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pesaveput.pdf
    • https://cdn.shopify.com/s/files/1/0431/9969/2958/files/gudomewuledoviripabove.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/53484299084.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30812088679.pdf
    • https://cdn.shopify.com/s/files/1/0428/0123/4076/files/jamasefu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0555/8436/files/fixokifomodogagedutasave.pdf
    • https://cdn.shopify.com/s/files/1/0432/9242/6405/files/werox.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_off000078f7.bin
c94d3cd1e94405daa21e730b088c68e0a0d937d2f65d67220f128782716d940f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F7 5388 bytes
font_01_sfnt_off00008b28.bin
7386dcc6e813a149476e5052622c8d95e76bf9282714c039a5b531d19dec7782		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B28 9996 bytes

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