Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfd3afe58610ef17…

MALICIOUS

PDF

43.7 KB Created: 2020-08-16 21:14:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7038962ddd3bb8a1aaca4f9ee11ecd1c SHA-1: a0702eaef6645831fe6bf2aaa86caeb4a682eff0 SHA-256: dfd3afe58610ef171070d125cc9d70030fd2f69d3e1f1c29737998f4eac12310
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, forming a link farm. One of these links, https://ttraff.com/pify?keyword=corrugated+roofing+sheet+dimensions, is identified as a malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary purpose is to redirect the user to malicious infrastructure, likely for phishing or further malware delivery.

Heuristics 3

  • 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.
  • 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=corrugated+roofing+sheet+dimensions
    • http://files.mrsbrandal.com/uploads/1/3/1/3/131382447/747934.pdf
    • https://cdn.shopify.com/s/files/1/0433/9197/5580/files/48489568838.pdf
    • https://cdn.shopify.com/s/files/1/0430/3575/4650/files/piwub.pdf
    • https://cdn.shopify.com/s/files/1/0429/3882/6918/files/gotedegezexiw.pdf
    • https://cdn.shopify.com/s/files/1/0433/3391/0681/files/xuzubuke.pdf
    • https://cdn.shopify.com/s/files/1/0431/9232/0161/files/aperturas_de_ajedrez_explicadas.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/celina_isd_calendar.pdf
    • https://cdn.shopify.com/s/files/1/0438/5452/8677/files/xewazudojubejexumof.pdf
    • https://cdn.shopify.com/s/files/1/0434/6845/6086/files/nokigakiwurewuzesakanine.pdf
    • https://cdn.shopify.com/s/files/1/0434/0393/5902/files/julojadi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3698/2944/files/ribumebebib.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_off00006dc3.bin
1e4045eca575b18f6807a1aec746df79b8d40deae44944551ebb66e7f825bf82		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC3 5192 bytes
font_01_sfnt_off00007f42.bin
d78f97d99e228b1fddb6d573515c967aa0aa93549b1a11f0cd598ab9053a72f6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7F42 10284 bytes

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