Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab9ff3e7f7c2931e…

MALICIOUS

PDF

39.8 KB Created: 2020-08-24 02:20:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 630e0b79642da169a8c95e151b4b61a7 SHA-1: 9a2c4e76832818057e986888f87db29759393054 SHA-256: ab9ff3e7f7c2931eb14af2be86f605e6fbd30c7bc47295a4023a127fbe643aee
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains a URL that appears to be a lure for an 'invitation template for corporate event'. This URL redirects to a malicious domain. The file also contains a large number of embedded links, many pointing to Shopify, which is characteristic of SEO link farm abuse to obscure the true malicious destination.

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.cc/pify?keyword=invitation+template+for+corporate+event
    • http://files.pa-di.dk/uploads/1/3/1/4/131407135/6371781.pdf
    • https://cdn.shopify.com/s/files/1/0438/3434/3574/files/3958844582.pdf
    • https://cdn.shopify.com/s/files/1/0432/9344/2208/files/55787259218.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71482320097.pdf
    • https://cdn.shopify.com/s/files/1/0429/7320/0537/files/terapi_ameloblastoma.pdf
    • https://cdn.shopify.com/s/files/1/0431/5856/9115/files/42075536119.pdf
    • https://cdn.shopify.com/s/files/1/0431/4690/3701/files/44172827303.pdf
    • https://cdn.shopify.com/s/files/1/0444/3042/6278/files/first_continental_congress_worksheet.pdf
    • https://cdn.shopify.com/s/files/1/0435/8216/1053/files/pixel_gun_3d_hack_2016.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/mazimuzoxoku.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1256/files/kogogotelebilavagivojaga.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_off00005ece.bin
4415642dc39c583fd465db640c48a4b049951b13cc5cc81c6483086a7b455af6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5ECE 4980 bytes
font_01_sfnt_off00006fab.bin
9e253081e673ee0501e96315790da2f10a15f9596adc497d26c54d6baeb28015		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FAB 10060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.