Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8c61b1677dbda2c…

MALICIOUS

PDF

44.6 KB Created: 2020-07-30 18:23:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ba9ee3050208e320fae1816f416b7506 SHA-1: c52b5a876b5ddd35119bf674fd53afb4053288cb SHA-256: e8c61b1677dbda2ce229b2b0753d1d2918d19809092940915c742945482f05ff
150 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector. The document body, though heavily obfuscated, contains text related to a 'split back formation playbook pdf', suggesting a lure. The primary attack pattern involves redirecting users to malicious infrastructure via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=split+back+formation+playbook+pdf
    • http://files.greatimpressionsstaging.com/uploads/1/3/0/7/130738841/c275d2e12f84.pdf
    • http://files.shellygiggey.com/uploads/1/3/0/7/130776592/9045740.pdf
    • http://files.landscapeaestheticsllc.com/uploads/1/3/2/6/132696112/pogemujejivobefazuwe.pdf
    • http://files.halcyonskies.net/uploads/1/3/2/6/132681938/wabokabuvewipumiva.pdf
    • http://files.landscapeaestheticsllc.com/uploads/1/3/2/6/132696112/pogemujejivobe
    • https://cdn.shopify.com/s/files/1/0430/8670/8890/files/60942871427.pdf
    • https://cdn.shopify.com/s/files/1/0429/2041/1303/files/12986859027.pdf
    • https://cdn.shopify.com/s/files/1/0432/6657/2443/files/xiwijolekebab.pdf
    • https://cdn.shopify.com/s/files/1/0429/1425/0905/files/72300704445.pdf
    • https://cdn.shopify.com/s/files/1/0427/5847/1846/files/92953234898.pdf
    • https://cdn.shopify.com/s/files/1/0434/5180/9942/files/belewoleraxekak.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/jokopewizemaw.pdf
    • https://cdn.shopify.com/s/files/1/0432/4897/6032/files/36378754625.pdf
    • https://cdn.shopify.com/s/files/1/0429/9961/1553/files/vegijijoxusanaremidamak.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/ranigapixiwijo.pdf
    • https://cdn.shopify.com/s/files/1/0430/6223/1201/files/penexewabibiwar.pdf
    • https://cdn.shopify.com/s/files/1/0427/7446/2631/files/25964824128.pdf
    • https://cdn.shopify.com/s/files/1/0435/9120/5021/files/55801495557.pdf
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/muvufamejifipomeveto.pdf
    • https://cdn.shopify.com/s/files/1/0437/1854/1480/files/jukumakofonub.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_off00007166.bin
018fadca93516d012b6d94699653aef17aa91215c33130be1d1c6b46633f209b
pdf-font-stream PDF embedded font (sfnt) at offset 0x7166 5204 bytes
font_01_sfnt_off000082ec.bin
2d4cae0be2e31da1f9859e4d83f0397206e3b767367bdb1a8851b7f38ba62c52
pdf-font-stream PDF embedded font (sfnt) at offset 0x82EC 9924 bytes