Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf55a91652860f5d…

MALICIOUS

PDF

38.6 KB Created: 2020-06-07 13:43:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 61cfb2376254301516414dcb4abc4cc7 SHA-1: 967e82f17ba1b1229d12be6b243c6c577f94412a SHA-256: cf55a91652860f5d48d3161ee0bbe94d55f03541bc1b11c68d15a00dbe90e2dc
180 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to domains associated with link farms and redirectors. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a URL leading to traff.com, a known malicious redirector. The presence of numerous external links suggests an attempt to direct users to potentially harmful content or phishing sites. The ClamAV detection further supports the malicious nature of this PDF.

Heuristics 4

  • 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-8795091-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-8795091-0
  • 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.com/wp3?keyword=pasar+pdf+imagen+a+word#pasar+pdf+imagen+a+word
    • http://test.overseasuk.com/uploads/1/3/1/3/131384024/vusefimudarudajiko.pdf
    • http://partybikebusiness.com/uploads/1/3/0/7/130775269/kefoxu.pdf
    • http://webdisk.lindseymichalowski.com/uploads/1/3/1/4/131437655/fdf35bf2c.pdf
    • http://tiyashop.com/uploads/1/3/0/2/130271076/3827e61646.pdf
    • http://74-123-73-130.mgwnet.com/uploads/1/3/0/6/130605396/793635.pdf
    • http://2k8.undesirable.us/uploads/1/3/1/4/131438825/23466e1ed8ef.pdf
    • http://mx.jaidynedwards.com/uploads/1/3/0/2/130270913/wepugevigo.pdf
    • http://healinggreenoregon.com/uploads/1/3/1/3/131384169/915a8fb98b4.pdf
    • https://zimosebam.files.wordpress.com/2020/06/29230367852.pdf
    • https://zarenorazer.files.wordpress.com/2020/06/sifokutevizaxusa.pdf
    • https://mufobug.files.wordpress.com/2020/06/pitafigefawigoxufawo.pdf
    • https://vosuzogareg.files.wordpress.com/2020/06/bobotidulav.pdf
    • https://dufamisiril.files.wordpress.com/2020/06/gasiraz.pdf
    • https://runowabak.files.wordpress.com/2020/06/tuxogumusem.pdf
    • https://xomaliv.files.wordpress.com/2020/06/lopegunibizuzowipenalira.pdf
    • https://fimodebama.files.wordpress.com/2020/06/ligatigoja.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/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000066e0.bin
1e489843638f4e148e06a81223da1a9fd59c536dab2f4a402529737de9a07bfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66E0 12028 bytes

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