Malicious PDF — malware analysis report

Static analysis result for SHA-256 fea4951b95c3e9f4…

MALICIOUS

PDF

32.6 KB Created: 2020-08-04 04:29:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 776df4476464ed2b3d9b95cb15802af2 SHA-1: 0aeec1f4f5884a8fbfca1162e2f7f75cd887500f SHA-256: fea4951b95c3e9f416065699e8d6c711c75834126d19cc33c95cdf185be730f0
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). The document body, though heavily obfuscated, contains text related to "hymn book pdf" and the malicious URL, suggesting a lure to disguise the malicious redirection. The presence of numerous links, including the malicious redirector, indicates a link farm or redirection strategy to distribute 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=afm+in+zimbabwe+hymn+book+pdf
    • http://files.goldensandsresort.ca/uploads/1/3/2/8/132814958/ce3437.pdf
    • http://files.bodyandsolspa.com/uploads/1/3/0/9/130968962/9859347.pdf
    • http://files.permittedtopause.co.uk/uploads/1/3/1/3/131397940/damujolumu.pdf
    • https://cdn.shopify.com/s/files/1/0427/5906/1670/files/86046775374.pdf
    • https://cdn.shopify.com/s/files/1/0428/0595/2671/files/zalamaruwut.pdf
    • https://cdn.shopify.com/s/files/1/0434/8909/9938/files/55161137139.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/86668491067.pdf
    • https://cdn.shopify.com/s/files/1/0433/0291/2158/files/49826545075.pdf
    • https://cdn.shopify.com/s/files/1/0435/8524/1245/files/vawujigobibovivikowi.pdf
    • https://cdn.shopify.com/s/files/1/0435/8720/7327/files/74312565046.pdf
    • https://cdn.shopify.com/s/files/1/0432/6014/9910/files/academy_stars_1_pupil_s_book.pdf
    • https://cdn.shopify.com/s/files/1/0429/6966/1589/files/sujelanarawabumopudurubid.pdf
    • https://cdn.shopify.com/s/files/1/0429/5163/9196/files/79007291364.pdf
    • https://cdn.shopify.com/s/files/1/0435/1783/7467/files/nitaxirebedakuk.pdf
    • https://cdn.shopify.com/s/files/1/0434/6891/4838/files/58397383292.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_off000042ea.bin
f899995d6a093a5ed8a64014dc4fd9ccbedc057b4b7e27b6a79739d0db0f9ddc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x42EA 5412 bytes
font_01_sfnt_off00005554.bin
225406ca456f4f1d742453aa6853012ba2d7b2b172df74764d20ae9d7a1f3e2e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5554 9508 bytes

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