Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ae7dcb2bd66634…

MALICIOUS

PDF

64.7 KB Created: 2020-08-03 05:55:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7b9e05c5e9a1eac9f5225d8a485608b0 SHA-1: 28f6cc6edce9c65d2a48aaa1785e79eebc8c22b5 SHA-256: a7ae7dcb2bd666343d36156321d3c1e7b23088665b549728e9a05184999fb292
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on 'cdn.shopify.com'. The document body, though heavily obfuscated, contains the malicious URL and appears to be a lure related to 'applied drilling engineering'. No scripts were extracted, but the primary attack vector is the redirection to a malicious site.

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=applied+drilling+engineering+bourgoyne+pdf
    • http://files.elizabethweybright.com/uploads/1/3/1/0/131070911/5110392.pdf
    • http://files.proseandcommas.org/uploads/1/3/1/4/131410545/6346374.pdf
    • http://files.jbjimerson.com/uploads/1/3/0/7/130738673/bumafajep_dijoto_tageb_niziz.pdf
    • http://files.snowypeaksoap.com/uploads/1/3/2/3/132302973/a7512c13cdce8e.pdf
    • http://files.improvemydealership.com/uploads/1/3/0/8/130874480/72d7ad732.pdf
    • https://cdn.shopify.com/s/files/1/0432/5376/0160/files/13964626839.pdf
    • https://cdn.shopify.com/s/files/1/0440/8741/0840/files/sewegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/9435/1778/files/62749831569.pdf
    • https://cdn.shopify.com/s/files/1/0437/1028/3931/files/xinonemegafader.pdf
    • https://cdn.shopify.com/s/files/1/0430/8110/5562/files/limepusumafijuzirerat.pdf
    • https://cdn.shopify.com/s/files/1/0432/5657/8212/files/94555686445.pdf
    • https://cdn.shopify.com/s/files/1/0429/1713/4502/files/gezesifogoxuxoremezim.pdf
    • https://cdn.shopify.com/s/files/1/0431/3199/4280/files/92835592029.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0154/files/78023129195.pdf
    • https://cdn.shopify.com/s/files/1/0439/0692/4712/files/sugojexivabatotufawu.pdf
    • https://cdn.shopify.com/s/files/1/0429/7034/9731/files/33912449456.pdf
    • https://cdn.shopify.com/s/files/1/0434/1802/6141/files/tukuzixamuri.pdf
    • https://cdn.shopify.com/s/files/1/0432/2839/7728/files/suwet.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_off0000a58f.bin
7a7e90916e8c8b6bc4fa2117994d1893891a8c3d8e35576d4084c0b4a2cdff17
pdf-font-stream PDF embedded font (sfnt) at offset 0xA58F 5052 bytes
font_01_sfnt_off0000b6d6.bin
12b2fb1e2199136eca83f3012e09dc9a52878207913ee88574dd57c5ea80ed3c
pdf-font-stream PDF embedded font (sfnt) at offset 0xB6D6 10912 bytes
font_02_sfnt_off0000dbff.bin
ae8c2df216e965e76ccbd97db6c9117008a047bbe6aa20e4abfe42d95c9e0ab7
pdf-font-stream PDF embedded font (sfnt) at offset 0xDBFF 17120 bytes