Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab7e4a84e49e7546…

MALICIOUS

PDF

45.4 KB Created: 2020-08-25 17:45:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b3d7176356110156f688a2f1cf49a718 SHA-1: 51fad6e0fd7dfdcc237626df672c3d458a9f780c SHA-256: ab7e4a84e49e754695f3c613e0cfb6fb34dce68a9a6bd73eb3ef7cfd12d98e93
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.ru. The document body, though heavily obfuscated, contains the same URL. Additionally, the PDF is flagged as a link farm, with numerous embedded links, many of which point to shopify.com domains, but some also point to potentially malicious domains. The primary malicious URL is https://ttraff.ru/pify?keyword=website+banner+online+template, which is likely used to redirect users to further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.ru/pify?keyword=website+banner+online+template
    • http://dobev.gallery-ww.com/uploads/1/3/1/8/131856158/bejoves_vejusatexobun_wukexuvadajabe_penezozakoroja.pdf
    • http://files.millomrufc.com/uploads/1/3/1/4/131454496/2ac9c0daa57b0b.pdf
    • https://cdn.shopify.com/s/files/1/0434/5970/7037/files/51774371787.pdf
    • https://cdn.shopify.com/s/files/1/0432/0755/7283/files/1076178506.pdf
    • https://cdn.shopify.com/s/files/1/0437/8794/4096/files/51758964959.pdf
    • https://cdn.shopify.com/s/files/1/0429/5327/7603/files/66442008530.pdf
    • https://cdn.shopify.com/s/files/1/0431/2920/8992/files/kavikipisapajamagujoso.pdf
    • https://cdn.shopify.com/s/files/1/0429/7755/8681/files/weveroxejurufa.pdf
    • https://cdn.shopify.com/s/files/1/0437/5108/0085/files/85526722929.pdf
    • https://cdn.shopify.com/s/files/1/0432/9721/0532/files/cg_love_status_video_2019.pdf
    • https://cdn.shopify.com/s/files/1/0431/3183/0421/files/wondershareelement_ocr.pdf
    • https://cdn.shopify.com/s/files/1/0456/4369/4247/files/beyond_two_souls_review_game_informer.pdf
    • https://cdn.shopify.com/s/files/1/0428/5156/5724/files/disuladopidiwunabot.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_off0000659b.bin
aa3b9827bba0df4c330dc83994617747ab83a5ec26f7cb6f204df380d4a749fd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659B 4904 bytes
font_01_sfnt_off00007620.bin
288cfac9cc8b7d2a60050e3db72801a75d8a21ae486e5ad107ad9384a3bfc970		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7620 10816 bytes
font_02_sfnt_off00009b0e.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B0E 4324 bytes

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