Malicious PDF — malware analysis report

Static analysis result for SHA-256 e102d67c4223a0d7…

MALICIOUS

PDF

65.8 KB Created: 2020-08-01 23:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0d3f24ee9f0d97e4ed39baefa8f53188 SHA-1: fac8645f562609147d8e8e839ce93d1f52793b1f SHA-256: e102d67c4223a0d79ca3a3c888b65224bb02c3de3070f1bb678269db2588637d
152 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, which are likely part of a link farm designed to obscure the ultimate destination. One critical heuristic identified a direct link to a known malicious redirector at `https://ttraff.cc/pify?keyword=country+code+420`. This suggests the document's primary purpose is to redirect users to malicious sites, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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.cc/pify?keyword=country+code+420
    • http://files.erinsolemsaas.com/uploads/1/3/1/4/131437308/46a7a7a.pdf
    • http://files.swimbarbadosvacations.com/uploads/1/3/1/4/131453902/rudifanurejuf.pdf
    • http://files.cherisewolas.com/uploads/1/3/1/1/131164033/e908457351bf0e3.pdf
    • http://files.liveatparkerhill.com/uploads/1/3/2/6/132682051/2b3e39.pdf
    • https://cdn.shopify.com/s/files/1/0437/8814/0696/files/vofumutavebewurixaxirog.pdf
    • https://cdn.shopify.com/s/files/1/0429/3217/5014/files/fefepakarukome.pdf
    • https://cdn.shopify.com/s/files/1/0430/3477/1610/files/if_in_r.pdf
    • https://cdn.shopify.com/s/files/1/0435/7121/6542/files/saziz.pdf
    • https://cdn.shopify.com/s/files/1/0438/4233/8981/files/xiresux.pdf
    • https://cdn.shopify.com/s/files/1/0432/2823/3885/files/jeroda.pdf
    • https://cdn.shopify.com/s/files/1/0429/7120/1699/files/lagejapebemiverokusoveko.pdf
    • https://cdn.shopify.com/s/files/1/0437/6854/5442/files/52606527626.pdf
    • https://cdn.shopify.com/s/files/1/0431/3019/2039/files/30605042630.pdf
    • https://cdn.shopify.com/s/files/1/0432/0159/3507/files/nusuderimalodasud.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/59625730079.pdf
    • https://cdn.shopify.com/s/files/1/0431/0243/7527/files/wilugukijozix.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_off0000b894.bin
b7a3a483b6342b186335c04f7b2356470e7e6dff30ef6fe60b569478176aeb3e
pdf-font-stream PDF embedded font (sfnt) at offset 0xB894 4884 bytes
font_01_sfnt_off0000c952.bin
3d338a1fc5e54b6116a6597d820b8f703e3d2d9a8f8afe9f912dbca83df18308
pdf-font-stream PDF embedded font (sfnt) at offset 0xC952 16024 bytes