Malicious PDF — malware analysis report

Static analysis result for SHA-256 e67167cacdd0b58d…

MALICIOUS

PDF

39.4 KB Created: 2020-08-01 23:44:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4224d82edacec3d5bfdd1bab7ed60933 SHA-1: e051b6d5688044bc1362b741b65932612855f041 SHA-256: e67167cacdd0b58d26c14d293ed5bda4a9aea2c58d5bd46ea96c90f8aa20837d
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains, including a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=power+of+attorney+colorado', suggesting a lure related to legal documents to drive traffic to malicious infrastructure. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms the presence of links to known malicious redirectors.

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=power+of+attorney+colorado
    • http://files.odessafilms.com/uploads/1/3/0/7/130776208/4e286672a3.pdf
    • http://files.longmontsistercities.com/uploads/1/3/2/6/132681901/8805584.pdf
    • http://files.healthyforestcoalition.ca/uploads/1/3/1/3/131381799/61ba1513e2.pdf
    • http://files.vaughanjamesphotography.com/uploads/1/3/0/8/130815017/naxisivotagi.pdf
    • http://files.gracepresconway.org/uploads/1/3/1/4/131453453/444b40e8c4107.pdf
    • https://cdn.shopify.com/s/files/1/0428/0093/9164/files/fesimuluramotuwejalat.pdf
    • https://cdn.shopify.com/s/files/1/0431/3051/9716/files/dunuxoxafuvi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/42539854631.pdf
    • https://cdn.shopify.com/s/files/1/0435/5670/0319/files/32799080887.pdf
    • https://cdn.shopify.com/s/files/1/0441/4029/8392/files/keep_ya_head_up_tupac_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0427/8861/8396/files/zuluxokarojijawibakutu.pdf
    • https://cdn.shopify.com/s/files/1/0438/8395/4328/files/75713557582.pdf
    • https://cdn.shopify.com/s/files/1/0428/0070/9791/files/tekuwopuxakuxojutisagosav.pdf
    • https://cdn.shopify.com/s/files/1/0428/5143/4652/files/42343200947.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/zuwuwoxirubudovonaborax.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_off00005eee.bin
44d5886bd431808d00a01dcb054e0e1c08f34971273e98f6753186b6e97e0e88		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EEE 5032 bytes
font_01_sfnt_off00007031.bin
f11eda6cba0e8759e33f16fbde2b8ac5c8ad5863d2b0a903c8d68d6f8fe29d8a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7031 9572 bytes

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