Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6623c11bf517ba5…

MALICIOUS

PDF

44.2 KB Created: 2020-08-08 04:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a539001bd1ce1a49e8d676fbada0543 SHA-1: c8b201588ec45959549e5a4cd21a9eea454315bf SHA-256: f6623c11bf517ba5517b87d582088993fcf641ef7a01714643455950430cab56
128 Risk Score

Malware Insights

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

The PDF file contains a lure related to a 'Canada study visa form' and embeds multiple external links. One of these links, `https://ttraff.com/pify?keyword=canada+study+visa+form+pdf`, is identified as a malicious redirector. The presence of a link farm and the invoice/payment lure heuristic suggest a phishing or scam attempt designed to redirect users to malicious content.

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/pify?keyword=canada+study+visa+form+pdf
    • http://files.twobeesapiary.com/uploads/1/3/0/7/130775131/6dd7dc391e.pdf
    • http://files.bessastadir.is/uploads/1/3/1/6/131637043/9954350.pdf
    • http://files.hooperphotographic.com/uploads/1/3/1/3/131381003/9feda.pdf
    • http://files.adrianbc.org/uploads/1/3/1/8/131856129/losepegamusemigile.pdf
    • https://cdn.shopify.com/s/files/1/0431/9143/5422/files/66275259531.pdf
    • https://cdn.shopify.com/s/files/1/0429/3178/1791/files/jisabenus.pdf
    • https://cdn.shopify.com/s/files/1/0433/3358/2998/files/tejiralunufibetodusiga.pdf
    • https://cdn.shopify.com/s/files/1/0427/9628/6111/files/rorafazireso.pdf
    • https://cdn.shopify.com/s/files/1/0428/6975/1967/files/cantico_dos_canticos_marcelo_almeida.pdf
    • https://cdn.shopify.com/s/files/1/0433/5976/4634/files/88845369426.pdf
    • https://cdn.shopify.com/s/files/1/0429/9004/3285/files/romota.pdf
    • https://cdn.shopify.com/s/files/1/0429/5216/3482/files/10929308711.pdf
    • https://cdn.shopify.com/s/files/1/0430/5672/6165/files/jinaxijunokubum.pdf
    • https://cdn.shopify.com/s/files/1/0431/6397/5835/files/wabiriji.pdf
    • https://cdn.shopify.com/s/files/1/0434/3313/2184/files/how_to_move_villagers_in_minecraft.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006fcb.bin
7d9ac68b4d0efaa10a2ba675a9ea29653bbf650c71cc33828f1c7e7f931233b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FCB 5224 bytes
font_01_sfnt_off00008186.bin
352266f4319f8c773b6034bc174bee372f35a3a018d32993dfda3db49dd51737		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8186 10084 bytes

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