Malicious PDF — malware analysis report

Static analysis result for SHA-256 26758f63e3377907…

MALICIOUS

PDF

58.0 KB Created: 2020-08-29 13:28:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 091ad4e45b22d4da96515b9949629a99 SHA-1: df9f4f3d981146371a343b2cc0e9fe468bb94690 SHA-256: 26758f63e3377907bd676f03215d061c361155cf3b87c7d39bcd6ab98ad59ecc
152 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 'ttraff.me'. This URL is embedded within the document body, suggesting a lure to trick users into clicking it. The PDF also exhibits characteristics of a link farm, with numerous external links, further supporting a malicious redirection attempt. No scripts were extracted, but the primary malicious activity appears to be the redirection to the identified malicious 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.me/wix?keyword=cbse+net+question+paper+2018+pdf
    • https://static.usrfiles.com/ugd/b8c837_f30751eebfe84bc9b64713e41fe34c72.pdf
    • https://static.usrfiles.com/ugd/b8c837_fea7b79cd52c4594bcfd75c3de00e607.pdf
    • https://static.usrfiles.com/ugd/b8c837_04facc1e46bc494c84e16378514556aa.pdf
    • https://static.usrfiles.com/ugd/5de1df_91371358077c4d89996374818bd47557.pdf
    • https://static.usrfiles.com/ugd/b8c837_b97a0e3b72dc47ab8d3b8cce4610559d.pdf
    • https://static.usrfiles.com/ugd/b8c837_1e6f9280bff74ab08132e5d1f533c3a3.pdf
    • https://static.usrfiles.com/ugd/b8c837_2ec1fbcccb3840da889773fed91971ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_b431a5b5acab4880b6aea72834d6317d.pdf
    • https://static.usrfiles.com/ugd/b8c837_350ed67898fa49bc8ca490459bc7a8c9.pdf
    • https://static.usrfiles.com/ugd/b8c837_50ba222184024d949a868fdbbb44e33c.pdf
    • https://static.usrfiles.com/ugd/b8c837_6165f694158d43ab92288a43d7f31baf.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf840f32a4434f0f821d515fb9d5e80e.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a2f204753934589af06579c39a91044.pdf
    • https://cdn.shopify.com/s/files/1/0435/9267/9582/files/fodenowew.pdf
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/91371337214.pdf
    • https://cdn.shopify.com/s/files/1/0431/8894/5064/files/topawegojox.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_off000088e7.bin
3edf05de42cd06ed4085d3886977f1f5481d329499c795bcbe540d859e29e8d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88E7 5692 bytes
font_01_sfnt_off00009c46.bin
5ff5cef7bd62be7dbc55fdfe66f4ed2150a454abd756807243e56a732eb756b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C46 12360 bytes
font_02_sfnt_off0000c3d6.bin
6820151f9a4816bccc9e85e605aef44ce22c8924dfcccd161584754f275bf028		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D6 16132 bytes

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