Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4e4ec46202ba5eb…

MALICIOUS

PDF

43.3 KB Created: 2020-08-03 09:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: adf6bfce8a04f45d62e5f8c73c61141f SHA-1: 28c03c90368ecb52111d46571e04d8a73ddb6b5a SHA-256: b4e4ec46202ba5eb54d46d17f1b245cbe3f9676f15c4c92408d83cb0278dcfce
150 Risk Score

Malware Insights

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

The PDF contains a malicious redirector link that is disguised as a movie title, aiming to trick users into clicking it. The link leads to 'ttraff.ru', which is flagged as malicious infrastructure. The document also exhibits characteristics of a link farm, with numerous embedded links pointing to PDF files hosted on various domains, many of which are dynamically generated or use numeric slugs, suggesting an attempt to manipulate search engine results or distribute further malicious content.

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.ru/pify?keyword=licensed+to+drive+full+movie
    • http://gewikob.chriscraneportfolio.com/uploads/1/3/0/7/130776031/tisaxomo-jexapepafob-jatatufosil-xepasedijof.pdf
    • http://files.emaportfolio.com/uploads/1/3/0/8/130873838/zesosutebojex.pdf
    • http://files.matthewdrnovseklaw.com/uploads/1/3/2/7/132712530/87e6e.pdf
    • http://files.theacneandskincareclinic.com/uploads/1/3/0/8/130873918/7860482.pdf
    • http://files.pblplace.com/uploads/1/3/1/4/131453969/067f2f6a6bed.pdf
    • https://cdn.shopify.com/s/files/1/0431/6643/3435/files/12419514254.pdf
    • https://cdn.shopify.com/s/files/1/0438/6498/1664/files/3044523738.pdf
    • https://cdn.shopify.com/s/files/1/0431/0899/1140/files/disazuwiwi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4492/0734/files/all_nba_basketball_teams.pdf
    • https://cdn.shopify.com/s/files/1/0431/5981/4306/files/suraruxewiwigizepo.pdf
    • https://cdn.shopify.com/s/files/1/0435/4880/3227/files/66947365464.pdf
    • https://cdn.shopify.com/s/files/1/0428/7807/5036/files/43821950023.pdf
    • https://cdn.shopify.com/s/files/1/0431/1210/4103/files/23035271442.pdf
    • https://cdn.shopify.com/s/files/1/0438/4430/5046/files/26071848240.pdf
    • https://cdn.shopify.com/s/files/1/0430/6888/3097/files/1537685656.pdf
    • https://cdn.shopify.com/s/files/1/0436/9914/2810/files/vimekuwevifotikudetene.pdf
    • https://cdn.shopify.com/s/files/1/0433/1392/2206/files/58039930469.pdf
    • https://cdn.shopify.com/s/files/1/0430/9975/0564/files/doxuma.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_off000069a9.bin
c77d4722dcb510095e98c0aa3ec9166d41fb28fea92a12cdb28c57c963305a0a
pdf-font-stream PDF embedded font (sfnt) at offset 0x69A9 4960 bytes
font_01_sfnt_off00007a80.bin
b54460c6d95fc10005735b89eefb462720821b37d4c7bcde3877728caa63991c
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A80 11028 bytes