Malicious PDF — malware analysis report

Static analysis result for SHA-256 9fa95951b737c059…

MALICIOUS

PDF

43.6 KB Created: 2020-08-29 19:57:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0e95497a6f91d95e5e7846fc49c89842 SHA-1: 6840b08db144d7455736a18ee2c07ddfe45b88f4 SHA-256: 9fa95951b737c05918d90bbd6ef831dd41737ed74d0ec925cdc0312fdd3cd4cb
152 Risk Score

Malware Insights

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

The PDF contains embedded URLs that point to a redirector service, which is a common technique for delivering malicious content. The document body, though heavily obfuscated, contains references to 'Mcdonald's franchise operations manual' and a URL that further supports this lure. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK confirms the malicious nature of the primary redirector URL.

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.club/wix?keyword=mcdonald%2527s+franchise+operations+manual
    • https://cdn.shopify.com/s/files/1/0433/7755/7660/files/tawekatamigutifavaz.pdf
    • https://cdn.shopify.com/s/files/1/0431/1734/6976/files/wobezona.pdf
    • https://cdn.shopify.com/s/files/1/0434/7170/0120/files/54360919739.pdf
    • https://cdn.shopify.com/s/files/1/0428/8741/3923/files/23761377431.pdf
    • https://static.usrfiles.com/ugd/b8c837_b97a0e3b72dc47ab8d3b8cce4610559d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b66c7751e714042a13b12e666979b85.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a08abdde3d64b1598a162903453a622.pdf
    • https://static.usrfiles.com/ugd/b8c837_8acef36893594428a8ad566ecad2be34.pdf
    • https://static.usrfiles.com/ugd/07625c_ba05e45df84144f380f7d46d0a78a235.pdf
    • https://static.usrfiles.com/ugd/34ec99_a47ca8f25af249d0add8e7da662d64f4.pdf
    • https://static.usrfiles.com/ugd/b8c837_53a242ddfb664530a6fc47c840efeb9d.pdf
    • https://static.usrfiles.com/ugd/b8c837_b11fb9b6e82542b783bc017fea5d10af.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_off00006129.bin
3cec158b7b9b5797f0c9283f5c160005808321dce525ae2e1c4f56865d735d3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x6129 3016 bytes
font_01_sfnt_off00006be2.bin
dca493754492db55b5a47af8c516610f0374064f4d020002275f8632b3c4f49d
pdf-font-stream PDF embedded font (sfnt) at offset 0x6BE2 5432 bytes
font_02_sfnt_off00007e35.bin
fd761aa2582499adf4a539cfed159d529e7c54549606278ab29835f16fa1ae43
pdf-font-stream PDF embedded font (sfnt) at offset 0x7E35 10344 bytes