Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee50f680d312be70…

MALICIOUS

PDF

40.6 KB Created: 2020-08-17 16:12:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4f27c41355bd7cb908dab6bf3318275b SHA-1: 4f4cbb9bbab0b7b6c5ae4c22fc4532bd6f77bc02 SHA-256: ee50f680d312be7060a668ddb52ae752e14973ca7e63d2820f7166029ce75068
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many pointing to Shopify-hosted PDF files, which is indicative of a link farm. One of the primary links redirects through a known malicious redirector, ttraff.com. The document body contains garbled text along with a reference to the redirector URL, suggesting an attempt to obscure the malicious intent. The presence of a link farm and a malicious redirector points towards an attack pattern aimed at either SEO manipulation or distributing further malicious content.

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=lagu+cakra+khan+kekasih+bayangan+akustik
    • http://files.quoisdesigns.com/uploads/1/3/1/3/131384424/8f8b5b1.pdf
    • http://xalumepip.tiffanijenee.net/uploads/1/3/0/7/130775493/eaf41d6223d5513.pdf
    • http://files.alanahbeautyandsfx.com/uploads/1/3/2/7/132710569/6985023.pdf
    • https://cdn.shopify.com/s/files/1/0431/6345/1549/files/.pdf
    • https://cdn.shopify.com/s/files/1/0448/0273/6279/files/graphic_designer_job_description.pdf
    • https://cdn.shopify.com/s/files/1/0431/0663/1833/files/zororevodekowojenurulu.pdf
    • https://cdn.shopify.com/s/files/1/0439/4565/6488/files/lalitemetamilarabubub.pdf
    • https://cdn.shopify.com/s/files/1/0430/8749/5321/files/34121045741.pdf
    • https://cdn.shopify.com/s/files/1/0427/9956/2911/files/pradhan_mantri_awas_yojana_list_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/gaxebabusagesefuzezo.pdf
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/30086128508.pdf
    • https://cdn.shopify.com/s/files/1/0434/6934/0822/files/wazafirubonatosit.pdf
    • https://cdn.shopify.com/s/files/1/0430/0655/8359/files/29280910477.pdf
    • https://cdn.shopify.com/s/files/1/0430/9729/2949/files/mindray_bc_3200_auto_hematology_analyzer.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_off000051e1.bin
4c16d300b4b99e28fec9c449b86e8eef23647819a6860175cce6ed508b1ebda9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x51E1 5276 bytes
font_01_sfnt_off000063cf.bin
bc085149e974493d503a9344fc3f934480ec71abb4f13c48f4de3429a1f275b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63CF 15456 bytes

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