Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab1d2079217f4b12…

MALICIOUS

PDF

55.0 KB Created: 2020-08-14 13:38:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9121c3d5cb53af83450d2ab793c8eb5f SHA-1: 7d67ba51b6a76d49198a809d31dc5443940254a8 SHA-256: ab1d2079217f4b12e1012ee242d124a6c42a25a2a63ca28b7f489b53c9e9f576
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.com/wb?keyword=exponent%20rules%20algebra%20pdf'. This indicates the document's primary purpose is to redirect users to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted, and the document body is heavily obfuscated, but the malicious redirector is a clear indicator of malicious intent.

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/wb?keyword=exponent%20rules%20algebra%20pdf
    • http://mavese.kitosbiotech.org/uploads/1/3/2/3/132302766/3675889.pdf
    • http://files.natasharavinand.com/uploads/1/3/1/6/131607810/joraperalijobe.pdf
    • http://tukevu.mesmereyesmakeupandbeauty.com/uploads/1/3/1/6/131636655/5570454.pdf
    • http://poxafeji.rachelsvineyardtucson.org/uploads/1/3/1/0/131070450/joren.pdf
    • https://cdn.shopify.com/s/files/1/0435/4398/6327/files/wusezumegazusipubokek.pdf
    • https://cdn.shopify.com/s/files/1/0430/4817/3722/files/8317951880.pdf
    • https://cdn.shopify.com/s/files/1/0433/2955/2552/files/povepakubegelulu.pdf
    • https://cdn.shopify.com/s/files/1/0447/5266/6778/files/fruits_and_vegetables_names_in_arabic_and_english.pdf
    • https://cdn.shopify.com/s/files/1/0436/4949/9289/files/49089485133.pdf
    • https://cdn.shopify.com/s/files/1/0435/2812/6618/files/47479047574.pdf
    • https://cdn.shopify.com/s/files/1/0432/1044/0862/files/astm_standards_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/0567/2597/files/accounting_information_system_james_hall_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0208/files/pakafodobadilunowijod.pdf
    • https://cdn.shopify.com/s/files/1/0435/6712/0539/files/lower_back_rehabilitation_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0437/2529/1674/files/ansys_tutorial_release_14.pdf
    • https://cdn.shopify.com/s/files/1/0432/4347/1010/files/apostolado_de_reparacion.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000071d1.bin
019779e80141aa36a87d2cfa622291d2907e55016a9f2e142187e154a69c7c34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D1 5376 bytes
font_01_sfnt_off00008418.bin
f49c2d8ea9b1858a2121eafee3cf25bc9cd6b45ab42ebdb440775674c646cb3d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8418 1796 bytes
font_02_sfnt_off00008cec.bin
2b59b51c101407f754042fecba3573678fea4a8ece69f0c7c4e488472ee5d49d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEC 14096 bytes
font_03_sfnt_off0000b9ef.bin
713933360072c9d59346590fad668f98c3603c6d2b72ed941ce85481f6af0b74		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB9EF 16060 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.