Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc89eac709221be6…

MALICIOUS

PDF

37.2 KB Created: 2020-08-14 10:08:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9f72a1a3422978353530feaf13e5f893 SHA-1: ae16e7b56d147ba077a7305702c5eaeea2cbec90 SHA-256: dc89eac709221be66755934a7dbcc056c57c2f1e93b852e2d6caf8c99091c99f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded links that point to a known malicious redirector, ttraff.com, disguised as a kitten feeding guide. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms this malicious intent. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, many hosted on Shopify, suggesting an attempt to distribute malicious content or engage in SEO manipulation for malicious purposes. The ML classifier also strongly flagged this PDF as malicious.

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=royal+canin+kitten+feeding+guide
    • http://files.soundhorseandhound.com/uploads/1/3/1/8/131858791/6240824.pdf
    • http://deduz.wmclb.org/uploads/1/3/0/9/130969060/6929170.pdf
    • http://files.sustainablewaresonline.com/uploads/1/3/0/7/130775992/golud_nazegugowanawe_zenino.pdf
    • http://zugibarek.4thdvpanecs.com/uploads/1/3/1/4/131452903/bbd2524c1b82685.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/78491346320.pdf
    • https://cdn.shopify.com/s/files/1/0431/2236/0469/files/tajifubuteso.pdf
    • https://cdn.shopify.com/s/files/1/0431/5791/3757/files/88912859460.pdf
    • https://cdn.shopify.com/s/files/1/0429/0058/6649/files/wediwevovakitej.pdf
    • https://cdn.shopify.com/s/files/1/0435/1921/3727/files/likelipimuxamuwegof.pdf
    • https://cdn.shopify.com/s/files/1/0430/4565/0586/files/calculus_a_complete_course_download.pdf
    • https://cdn.shopify.com/s/files/1/0439/3995/4856/files/bendito_seas_seor_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0438/0193/6033/files/34740876423.pdf
    • https://cdn.shopify.com/s/files/1/0433/5242/4598/files/2532408263.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sesolofulazige.pdf
    • https://cdn.shopify.com/s/files/1/0438/9067/1771/files/types_of_articles_in_english_grammar.pdf
    • https://cdn.shopify.com/s/files/1/0440/7197/7110/files/surrealismo_caracteristicas.pdf
    • https://cdn.shopify.com/s/files/1/0437/8116/1111/files/36558410495.pdf
    • https://cdn.shopify.com/s/files/1/0432/2240/1185/files/99321134793.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_off0000543e.bin
baacabeea1bbaec2b9f7516d6f339e4e2429d14953c85d1e846b83fe768a4d8c
pdf-font-stream PDF embedded font (sfnt) at offset 0x543E 5088 bytes
font_01_sfnt_off000065af.bin
a7c89b9f33b25716f36a90b0d3d4654a986c997292e8d1f91828a8d851f3ea89
pdf-font-stream PDF embedded font (sfnt) at offset 0x65AF 10096 bytes