Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4b8464f311e3a36…

MALICIOUS

PDF

123.0 KB Created: 2020-08-11 14:12:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 423b22f3f3e2f9a3f69c088eb450f1f4 SHA-1: 661b88b0b9bcc757f369c80ed5def35ce0893abf SHA-256: b4b8464f311e3a36d8b08cd83c32efbce42a7916aa1f858a3fef46d27d15d528
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.cc/pify?keyword=kabbalah+el+arbol+de+la+vida+libro+pdf'. This indicates the document's primary purpose is to redirect the user to a potentially harmful site. Additionally, the PDF exhibits characteristics of a link farm, embedding numerous external links, many of which are hosted on Shopify. The document body, though heavily obfuscated, contains the same malicious URL, reinforcing the redirection attempt.

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.cc/pify?keyword=kabbalah+el+arbol+de+la+vida+libro+pdf
    • http://files.dlfinancial.org/uploads/1/3/1/3/131379749/tobij.pdf
    • http://files.waltermade.com/uploads/1/3/1/4/131437683/fisoloraluzajejaj.pdf
    • http://files.grassrootslawnandlandscaping.net/uploads/1/3/1/4/131408100/2476684.pdf
    • http://bozoxumal.readytograduate.com/uploads/1/3/0/7/130775735/moril_ruluperewoda.pdf
    • https://cdn.shopify.com/s/files/1/0432/5395/6758/files/jenis_jenis_metode_blanching.pdf
    • https://cdn.shopify.com/s/files/1/0436/6965/1609/files/how_weeks_in_a_year.pdf
    • https://cdn.shopify.com/s/files/1/0430/6688/4250/files/adelbert_von_chamisso_la_maravillosa_historia_de_peter_schlemihl.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5805/files/bofoj.pdf
    • https://cdn.shopify.com/s/files/1/0433/4842/6920/files/16477443116.pdf
    • https://cdn.shopify.com/s/files/1/0437/7640/9751/files/billennium_jg_ballard.pdf
    • https://cdn.shopify.com/s/files/1/0430/8851/1130/files/lilopibolelulesikilofevi.pdf
    • https://cdn.shopify.com/s/files/1/0428/7892/7011/files/dejedin.pdf
    • https://cdn.shopify.com/s/files/1/0432/3550/8392/files/lidofisoragenutuvelitu.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_off0001a676.bin
5e1899aaac43252b0cf1a96730c16e12310adeb0fd138a9916447f5bf95ad0b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1A676 5120 bytes
font_01_sfnt_off0001b7e1.bin
704569309e28c0bc173b6d2aace9262f4a45af592b3ede6ad0c4eeaad41bb0ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1B7E1 11548 bytes

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