Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09085443a120757…

MALICIOUS

PDF

50.1 KB Created: 2020-08-07 17:01:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 950e638ac9f706c4e23bb68c2283e651 SHA-1: 99b532c50a458c0acf2620d881c040319ef5e6ef SHA-256: e09085443a120757353d29148a26e492936ef3012ed92044fb46fecfcac2d20f
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing indicating a malicious redirector. The primary malicious URL identified is https://ttraff.com/pify?keyword=autoimmune+protocol+meal+plan+pdf, which is likely used to redirect users to further malicious content. The document body, though heavily obfuscated, also contains this URL, reinforcing its role in the attack. The presence of a link farm heuristic suggests this PDF is part of a larger SEO poisoning or link distribution scheme.

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.com/pify?keyword=autoimmune+protocol+meal+plan+pdf
    • http://files.brushandbranch.co/uploads/1/3/0/7/130740344/2297158.pdf
    • http://nukodotoj.aheartfortheharvest.com/uploads/1/3/2/8/132816202/9ec63810bc0.pdf
    • http://files.sepegrade6.com/uploads/1/3/1/3/131398477/cae58bda1e.pdf
    • https://cdn.shopify.com/s/files/1/0427/8022/9791/files/wenupokirokitigi.pdf
    • https://cdn.shopify.com/s/files/1/0431/8547/1656/files/80022680381.pdf
    • https://cdn.shopify.com/s/files/1/0433/5344/0414/files/air_conditioning_type.pdf
    • https://cdn.shopify.com/s/files/1/0434/6816/1176/files/download_putty_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0431/5162/2306/files/33057250260.pdf
    • https://cdn.shopify.com/s/files/1/0439/1455/9656/files/33613370137.pdf
    • https://cdn.shopify.com/s/files/1/0439/0912/0152/files/40684084478.pdf
    • https://cdn.shopify.com/s/files/1/0430/9755/5108/files/applied_hydrology_chow_solution_manual.pdf
    • https://cdn.shopify.com/s/files/1/0438/8729/6680/files/meningitis_bacteriana_y_viral_en_pediatria.pdf
    • https://cdn.shopify.com/s/files/1/0432/9802/9733/files/zoruzomazatupitu.pdf
    • https://cdn.shopify.com/s/files/1/0433/6936/5654/files/37172271524.pdf
    • https://cdn.shopify.com/s/files/1/0436/4887/6702/files/4045129847.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_off00007910.bin
9c9bd1fdf5859f4b8f305e54f204992759e223514ae2a9440e8f0e8698366542
pdf-font-stream PDF embedded font (sfnt) at offset 0x7910 4992 bytes
font_01_sfnt_off000089ea.bin
0a7a31ce8219a49227efb2dcc9dbc335639b3ad165cb639ea605572d961f9bd2
pdf-font-stream PDF embedded font (sfnt) at offset 0x89EA 10352 bytes
font_02_sfnt_off0000ad5b.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34
pdf-font-stream PDF embedded font (sfnt) at offset 0xAD5B 4324 bytes