Malicious PDF — malware analysis report

Static analysis result for SHA-256 a9aa32b0e28f1e4b…

MALICIOUS

PDF

47.0 KB Created: 2020-08-30 18:21:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 356ee23ed18f96f66f135274fd821070 SHA-1: 22d8eb3d61fce295361e72ba84765f2635e0d7d2 SHA-256: a9aa32b0e28f1e4b81dcd24d12fc54b8ce742f659cc3b8002e25e40fe8c46689
152 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is 'https://ttraff.ru/wix?keyword=30+day+transformation+plan+pdf'. The document body, though heavily obfuscated, also contains this URL, suggesting a lure to a malicious site. The presence of many Shopify links, while mostly benign, is characteristic of SEO link farms used to mask malicious activity.

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.ru/wix?keyword=30+day+transformation+plan+pdf
    • https://cdn.shopify.com/s/files/1/0432/0277/3156/files/74849791046.pdf
    • https://cdn.shopify.com/s/files/1/0429/8083/5482/files/waroxilomifizasosugadaf.pdf
    • https://cdn.shopify.com/s/files/1/0438/9801/1816/files/veluligomipudumi.pdf
    • https://cdn.shopify.com/s/files/1/0429/1539/7788/files/uninstall_office_2016_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/8923/9969/files/vertigo_exercises_nhs.pdf
    • https://static.usrfiles.com/ugd/df4650_7f5a8fb79aae456e84e47742f8ba1305.pdf
    • https://static.usrfiles.com/ugd/b8c837_41934b2beee5442ca25610b90fd6c930.pdf
    • https://cdn.shopify.com/s/files/1/0431/1446/3394/files/35929607011.pdf
    • https://cdn.shopify.com/s/files/1/0456/4464/4519/files/38774454680.pdf
    • https://cdn.shopify.com/s/files/1/0434/8890/3325/files/89826175121.pdf
    • https://cdn.shopify.com/s/files/1/0462/2440/8730/files/physics_of_everyday_phenomena.pdf
    • https://cdn.shopify.com/s/files/1/0435/7488/6563/files/radio_astronomy_textbook.pdf
    • https://cdn.shopify.com/s/files/1/0436/1984/4258/files/48550714167.pdf
    • https://cdn.shopify.com/s/files/1/0431/8530/7808/files/ilmi_capsule_islamiat_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/3950/7100/files/23266845748.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_off00006b97.bin
6f05d5321c18b72dfdaed860ff65c812d6f75ba4b6bba7eeb800221b11d56399		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B97 5168 bytes
font_01_sfnt_off00007cfc.bin
66539d4f260391a5c38785864fe2824e945b5cd65246de6f8005da237813e731		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7CFC 10668 bytes
font_02_sfnt_off0000a124.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA124 4324 bytes

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