Malicious PDF — malware analysis report

Static analysis result for SHA-256 a34743be463a35e4…

MALICIOUS

PDF

54.0 KB Created: 2020-08-21 03:05:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8f8fc0c2309172e0590b851f7be41243 SHA-1: d98fc89008aa033eb61ab919c3142cbd035a6199 SHA-256: a34743be463a35e4819f1ede09b92aa5e2c9b97643bd0dbac62db114d67acae0
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector link to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure for users to click through to potentially malicious content. The presence of a large number of external PDF links, many hosted on Shopify, further supports the SEO link farm heuristic.

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=anari+movie+songs+ming
    • http://livulekal.terrysdm.org/uploads/1/3/0/7/130776819/9ea50081c1c2f.pdf
    • http://files.luxuwrist.com/uploads/1/3/1/6/131606331/d7038.pdf
    • https://cdn.shopify.com/s/files/1/0434/4869/6993/files/arabic_movies_free_full_version.pdf
    • https://cdn.shopify.com/s/files/1/0428/8161/3987/files/54978311025.pdf
    • https://cdn.shopify.com/s/files/1/0433/6805/4949/files/84306000254.pdf
    • https://cdn.shopify.com/s/files/1/0428/6749/0972/files/kiran_publication_maths_bank_po_books_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/6873/5140/files/66503077439.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wurawosupamajo.pdf
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/mozome.pdf
    • https://cdn.shopify.com/s/files/1/0433/0536/9768/files/dubitetakonum.pdf
    • https://cdn.shopify.com/s/files/1/0432/1122/7300/files/gitetelinozofimi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008127.bin
5d2a9b20c561b0774de54cd7471b351adacc6e5f82f24dec2ec960b1351a4aa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8127 4728 bytes
font_01_sfnt_off0000910f.bin
501fe91fdb47bb66636315c1433671ef80df74bd235562028d37c1a61b7e16f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x910F 13988 bytes
font_02_sfnt_off0000bd61.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBD61 4324 bytes

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