Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8d2170a51f47782…

MALICIOUS

PDF

38.1 KB Created: 2020-08-19 22:29:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9851968c100312b1a9e672c9b75a4d70 SHA-1: 77084b0d15d4e950600ae1a7534c208e29c5e144 SHA-256: d8d2170a51f477826652d549cdc3bdae2aa00f8f6ad31210d3c096d257c68db4
128 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which, 'https://ttraff.com/pify?keyword=customs+declaration+form+for+shipping+to+canada', is identified as a malicious redirector. The document body text, though partially corrupted, suggests a lure related to customs declarations, aligning with the SE_INVOICE_LURE heuristic. The presence of a link farm further indicates malicious intent to distribute harmful 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=customs+declaration+form+for+shipping+to+canada
    • http://files.glamorgananimalclinic.com/uploads/1/3/0/7/130776619/9186309.pdf
    • https://cdn.shopify.com/s/files/1/0433/7169/2188/files/texas_cdl_handbook_audio.pdf
    • https://cdn.shopify.com/s/files/1/0429/8060/6111/files/taquicardia_ventricular_definicion.pdf
    • https://cdn.shopify.com/s/files/1/0436/4809/0270/files/microsoft_visio_2007_free_download_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0429/8588/1759/files/anatomi_fisiologi_hernia_inguinalis.pdf
    • https://cdn.shopify.com/s/files/1/0437/3122/2677/files/john_deere_155.pdf
    • https://cdn.shopify.com/s/files/1/0439/1282/2939/files/bemazisasaxotesidigozij.pdf
    • https://cdn.shopify.com/s/files/1/0439/2134/2619/files/6653343291.pdf
    • https://cdn.shopify.com/s/files/1/0434/6894/7616/files/nexidari.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_off0000575c.bin
cffa4b5fef130b1766ffac32b4c97be9d2dc85985711563d4a3e904e635f0020		 pdf-font-stream PDF embedded font (sfnt) at offset 0x575C 5476 bytes
font_01_sfnt_off000069cf.bin
f98ee132048079abaf9d6869be316a9a7b235f37c3b0e14619a9d633a48a53cc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x69CF 10016 bytes

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