Malicious PDF — malware analysis report

Static analysis result for SHA-256 56495d7cfae934b8…

MALICIOUS

PDF

48.0 KB Created: 2020-08-06 08:39:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 92ba313e5b28b68729b1196b9026b17f SHA-1: f7ad3571840dbd677cf579b5369b7fc2c8ffce77 SHA-256: 56495d7cfae934b81ac19e2d8ab489c6d8c9ba96f44b756c20df89b3cd803f44
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic identifying a link to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a worksheet and the malicious URL. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=surface+area+of+rectangular+prism+word+problems+worksheet+pdf
    • http://files.compassionvet.com/uploads/1/3/0/9/130969061/701780b.pdf
    • http://files.artculturetourism.co.uk/uploads/1/3/1/3/131383583/motubasugot.pdf
    • http://files.mujand.com/uploads/1/3/1/0/131070895/wegivemuxasogo-lirojulozi.pdf
    • http://files.funonwater.net/uploads/1/3/1/4/131437779/921728.pdf
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/rovafuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/7231/4778/files/griffonrook_run_entrance.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/34707652888.pdf
    • https://cdn.shopify.com/s/files/1/0432/2449/8333/files/92797483215.pdf
    • https://cdn.shopify.com/s/files/1/0432/6067/4198/files/badugijagise.pdf
    • https://cdn.shopify.com/s/files/1/0440/3711/1973/files/4377162268.pdf
    • https://cdn.shopify.com/s/files/1/0430/0413/3525/files/college_botany_practical_book.pdf
    • https://cdn.shopify.com/s/files/1/0432/2862/7107/files/89868745731.pdf
    • https://cdn.shopify.com/s/files/1/0437/7837/5831/files/34467432864.pdf
    • https://cdn.shopify.com/s/files/1/0434/3745/7575/files/55559121199.pdf
    • https://cdn.shopify.com/s/files/1/0434/0419/8038/files/97754890832.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_off00006647.bin
22c689314b9676ad1468b85b47e35c8a8c06bc5ced6ed11e00a97bdef7f0954a
pdf-font-stream PDF embedded font (sfnt) at offset 0x6647 5968 bytes
font_01_sfnt_off00007a77.bin
f3d7314cc317d7366391321980d7a50469160c446fc67b3ed76d54ac6aed4a13
pdf-font-stream PDF embedded font (sfnt) at offset 0x7A77 10216 bytes
font_02_sfnt_off00009da8.bin
600aa39070f77b1bff24cc1c88b70bc53fbdf25fef7c0b0d1ba801174e977c5e
pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA8 16076 bytes