Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e14f9a52b6764ca…

MALICIOUS

PDF

33.9 KB Created: 2020-08-30 07:37:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bc8f19f195fe02a47ee43b2a02eaf620 SHA-1: 3e247db61210e93ed66c5f6d1a2ab8126763b058 SHA-256: 9e14f9a52b6764ca20de2a69a62948aea6d0c566b5477057eb1d995368f6dde0
150 Risk Score

Malware Insights

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

The PDF file was flagged as malicious due to a high number of embedded links, with one specifically pointing to a known malicious redirector. The document body contains a large list of URLs, predominantly hosted on Shopify, suggesting a link farm or SEO poisoning attempt to lure users to malicious content. The primary malicious URL identified is ttraff.com, which is likely used for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/wix?keyword=epidemiologia+aplicada+jokin+de+iral
    • https://cdn.shopify.com/s/files/1/0435/2717/6343/files/55568865653.pdf
    • https://cdn.shopify.com/s/files/1/0439/2720/8091/files/assessing_critical_thinking_skills.pdf
    • https://cdn.shopify.com/s/files/1/0429/6055/2085/files/18270797820.pdf
    • https://cdn.shopify.com/s/files/1/0432/0516/5216/files/zaruli.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/mcafee_for_mac.pdf
    • https://cdn.shopify.com/s/files/1/0461/7581/3786/files/solving_quadratic_equations_review_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0428/2122/2567/files/beginning_algebra_7th_edition_martin_gay_free.pdf
    • https://cdn.shopify.com/s/files/1/0428/3321/5654/files/81361772034.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37144816260.pdf
    • https://cdn.shopify.com/s/files/1/0460/9405/7636/files/call_of_duty_black_ops_1_xbox_360_ch.pdf
    • https://cdn.shopify.com/s/files/1/0430/8015/5290/files/alcoholics_anonymous_big_book_fourth_edition.pdf
    • https://cdn.shopify.com/s/files/1/0462/4433/1680/files/38181882145.pdf
    • https://cdn.shopify.com/s/files/1/0430/5669/3397/files/what_is_catatonic_schizophrenia.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_off00004438.bin
49f2d4ed28f5849fecf1e60fe780fe84b4c97edc56b40667cc1088c8782a0fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4438 5312 bytes
font_01_sfnt_off00005644.bin
0fa4d2ccac091eb0d43ed1e25ecfe749ab9b34e6133bf9bae5202ddb9d90cb63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5644 10736 bytes

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