Malicious PDF — malware analysis report

Static analysis result for SHA-256 e08c74dfa1197542…

MALICIOUS

PDF

47.0 KB Created: 2020-08-20 04:23:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: cf0ccca97639ec4f982e2d8288f96e8c SHA-1: f0a81b47690b52248106117fc966dd4bea78261e SHA-256: e08c74dfa1197542c525e1422ba6c9efe1d4373240c860e9bcdae85adf7fced2
152 Risk Score

Malware Insights

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

The PDF contains a link to a redirector service, ttraff.cc, which is flagged as malicious. This redirector is likely used to obscure the final destination of the download, which appears to be related to 'live net tv 4.7 apk uptodown'. The document also hosts a large number of external PDF links, many pointing to Shopify, suggesting a link farm for SEO manipulation or traffic generation. The ML classifier strongly indicates maliciousness.

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=live+net+tv+4.+7+apk++uptodown
    • http://files.dagcamera.com/uploads/1/3/1/6/131636907/8735520.pdf
    • http://bituzim.vegpatch.org/uploads/1/3/0/7/130776449/minemolu_xewigukijiz_ruropedot_fopawukexagu.pdf
    • http://zaxalodi.bonnielynnsart.com/uploads/1/3/1/8/131855981/579f936eb0e.pdf
    • https://cdn.shopify.com/s/files/1/0431/3815/4650/files/69406093925.pdf
    • https://cdn.shopify.com/s/files/1/0428/3236/3687/files/brazelton_touchpoints_3_to_6.pdf
    • https://cdn.shopify.com/s/files/1/0428/9452/4579/files/35848277957.pdf
    • https://cdn.shopify.com/s/files/1/0430/3002/0247/files/factorio_t_junction.pdf
    • https://cdn.shopify.com/s/files/1/0429/4141/5587/files/16136837412.pdf
    • https://cdn.shopify.com/s/files/1/0432/2826/6654/files/mexodoru.pdf
    • https://cdn.shopify.com/s/files/1/0432/5556/2402/files/pumim.pdf
    • https://cdn.shopify.com/s/files/1/0431/5004/9448/files/dopemewapeniti.pdf
    • https://cdn.shopify.com/s/files/1/0439/0774/3899/files/create_bookmarks_online.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5792/files/hiring_poster_template_editable.pdf
    • https://cdn.shopify.com/s/files/1/0431/8960/0414/files/36920003722.pdf
    • https://cdn.shopify.com/s/files/1/0431/4362/6912/files/analyse_physico_chimique_de_lait.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_off00007b23.bin
5c7da5171ea4fafda7f839c5fe3bf000855e61c501a10ecf092805a0d2dbeaa8
pdf-font-stream PDF embedded font (sfnt) at offset 0x7B23 5004 bytes
font_01_sfnt_off00008c67.bin
f2a19c623314d8d019d2b9b8a51d3ae2995450d3973768bdfd7f7b70b70aa58b
pdf-font-stream PDF embedded font (sfnt) at offset 0x8C67 10156 bytes