Malicious PDF — malware analysis report

Static analysis result for SHA-256 f106f664995a645e…

MALICIOUS

PDF

45.5 KB Created: 2020-08-03 04:40:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: c2aac7dcdc409bb2c3980e11ff5d4d7d SHA-1: bb0fecabb18c30ea8e76b23e022cee0bbd7ec40b SHA-256: f106f664995a645ea063ea85979c0f36cf6056274f660011ea8adb70a62a2d99
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify-hosted PDFs, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to obscure the ultimate malicious destination. The primary malicious URL is https://ttraff.com/pify?keyword=www.+ugames.+com%252F+instructions.+asp+owl, which is flagged as a malicious redirector.

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/pify?keyword=www.+ugames.+com%252F+instructions.+asp+owl
    • http://files.rebelliousrheaboutique.shop/uploads/1/3/1/4/131406413/2090860.pdf
    • http://files.jgmowers.com/uploads/1/3/0/7/130740257/tujapetomalo-zudimanedorijog-sepum.pdf
    • http://files.faithchapelberlin.com/uploads/1/3/1/3/131383775/fixijagowafeniwe.pdf
    • http://files.walnutgrovebaptistchurch.net/uploads/1/3/2/6/132695569/5ad17d7bca903d6.pdf
    • http://files.fwrna.org/uploads/1/3/0/8/130813144/wolik.pdf
    • https://cdn.shopify.com/s/files/1/0427/6797/4556/files/65133463060.pdf
    • https://cdn.shopify.com/s/files/1/0432/1378/3203/files/mupufedisazubumen.pdf
    • https://cdn.shopify.com/s/files/1/0440/8170/9206/files/59692025829.pdf
    • https://cdn.shopify.com/s/files/1/0438/2870/7485/files/hazard_of_the_cast_god_roll.pdf
    • https://cdn.shopify.com/s/files/1/0431/8216/2084/files/rezezasesafuturoxawo.pdf
    • https://cdn.shopify.com/s/files/1/0434/0292/0086/files/bavejurebakiparagaleju.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/jofuruginusilupenogadek.pdf
    • https://cdn.shopify.com/s/files/1/0431/4267/6648/files/39284394211.pdf
    • https://cdn.shopify.com/s/files/1/0434/8434/8569/files/fobujinodumubarefaxep.pdf
    • https://cdn.shopify.com/s/files/1/0429/4665/8463/files/77731995067.pdf
    • https://cdn.shopify.com/s/files/1/0431/5663/5812/files/pevedafibajadip.pdf
    • https://cdn.shopify.com/s/files/1/0438/6557/1493/files/fuzemenalasoxetizexapuv.pdf
    • https://cdn.shopify.com/s/files/1/0428/4622/4551/files/lunolofi.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_off00006c13.bin
d36511a32d416d7291ebf492cc5bd3bc93973fe53cd8a424f04b5f1fd99c5874
pdf-font-stream PDF embedded font (sfnt) at offset 0x6C13 5424 bytes
font_01_sfnt_off00007ea0.bin
7ae55cbe5d0bf4ee4e9852a4776d246c5084f3e952fad672d90f0903f8255e60
pdf-font-stream PDF embedded font (sfnt) at offset 0x7EA0 13584 bytes