Malicious PDF — malware analysis report

Static analysis result for SHA-256 ce5feb1658232be1…

MALICIOUS

PDF

43.9 KB Created: 2020-08-31 12:31:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 36a71bd7c3ef2c00c21de93364ac4cca SHA-1: 26917f06e36d0a285f4606dd34d50a7b4b0d3192 SHA-256: ce5feb1658232be1f1dea044cc88f241ffdc55fdb806f9d0772ffaaf096c9491
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one identified as a malicious redirector. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that the link at https://ttraff.com/wix?keyword=cutting+edge+upper+intermediate+teac points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a large number of external links, suggesting an attempt to manipulate search engine results or distribute content. The presence of a visual download button further supports a lure-based attack pattern. No scripts were extracted, but the PDF structure and link analysis strongly suggest a malicious intent to redirect users to harmful content.

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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/wix?keyword=cutting+edge+upper+intermediate+teac
    • https://static.usrfiles.com/ugd/b8c837_1cb4107600054da8b5f169b8a7abdea4.pdf
    • https://static.usrfiles.com/ugd/40512e_698e7932d9214263910670dff9115271.pdf
    • https://static.usrfiles.com/ugd/66c878_425bd5b72825407aa318441a414fcd7e.pdf
    • https://static.usrfiles.com/ugd/b8c837_d238e8a2d67e4e41911288f40a2d4cc3.pdf
    • https://static.usrfiles.com/ugd/b8c837_9eace22d32914984a2f7a99007a56742.pdf
    • https://cdn.shopify.com/s/files/1/0434/4361/7958/files/rusty_bucket_nutrition_guide.pdf
    • https://static.usrfiles.com/ugd/b4f0c6_a295f4dd8fa544aeb08dbb2cd4eb6ec8.pdf
    • https://static.usrfiles.com/ugd/de60da_47511c83221c46b7b6524656ba53dd8a.pdf
    • https://static.usrfiles.com/ugd/cac9e4_19bdb49aae6d400780aebd8ecaf48a2d.pdf
    • https://cdn.shopify.com/s/files/1/0434/3486/8897/files/vezuzasapor.pdf
    • https://cdn.shopify.com/s/files/1/0462/9053/4561/files/the_battle_for_skandia_read_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30547733638.pdf
    • https://cdn.shopify.com/s/files/1/0430/6996/4439/files/armas_nucleares_en_el_mundo.pdf
    • https://cdn.shopify.com/s/files/1/0438/8149/6744/files/all_prefixes_and_suffixes_list.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_off00006061.bin
4b2b86a0969243ae5770ef08a0fba74dd4683ee5e4d9cca52584de49579ce292
pdf-font-stream PDF embedded font (sfnt) at offset 0x6061 4976 bytes
font_01_sfnt_off00007133.bin
2d05eb20f4e340074330cf4b1300124c119fdc0daff5ea0445d75a5d4445e0e4
pdf-font-stream PDF embedded font (sfnt) at offset 0x7133 10328 bytes
font_02_sfnt_off0000949f.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378
pdf-font-stream PDF embedded font (sfnt) at offset 0x949F 4324 bytes