Malicious PDF — malware analysis report

Static analysis result for SHA-256 2dcd3a6da70ef1f5…

MALICIOUS

PDF

45.5 KB Created: 2020-08-29 13:22:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9b1f8433ae8d5a7c87cf05c9138541ae SHA-1: 3cfb902fe63f19e66d9e8a902d5977885f646fbf SHA-256: 2dcd3a6da70ef1f55198de21762c13f46607af1db85b1b7aefa4d075277b1ab7
150 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, disguised as a thermostat manual. This heuristic, combined with the ML classifier flagging the PDF as malicious, strongly suggests a phishing or redirection attack. The document body, though heavily obfuscated, contains the target URL and references to a thermostat manual, reinforcing the lure.

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/wix?keyword=thermostat+elm+leblanc+mode+d%2527+emploi
    • https://static.usrfiles.com/ugd/b8c837_eb85a69704e54eceb19bf28d159057f5.pdf
    • https://static.usrfiles.com/ugd/b8c837_0b59d6537ef348f5a778430726f63811.pdf
    • https://static.usrfiles.com/ugd/824332_0e14f6509a0b4cf994d3f4f4d427230f.pdf
    • https://static.usrfiles.com/ugd/b8c837_65b630379da3491ab4784af37e4b5ad0.pdf
    • https://static.usrfiles.com/ugd/b8c837_7fdb069ff4f04dcbb37ab1446f3308e2.pdf
    • https://cdn.shopify.com/s/files/1/0428/4946/8582/files/gubijox.pdf
    • https://cdn.shopify.com/s/files/1/0437/6153/3085/files/lowrance_hds_7_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/6208/4262/files/39298205687.pdf
    • https://static.usrfiles.com/ugd/b8c837_0f14f3c6ac4b44149e830a109770851b.pdf
    • https://static.usrfiles.com/ugd/b8c837_51c9bea7256843c986a30719e40de5f8.pdf
    • https://static.usrfiles.com/ugd/b8c837_d2e7247bb0044db9b5e64c5a0c58f8ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_5d14f62adef8440894aca4ea24f42775.pdf
    • https://static.usrfiles.com/ugd/b8c837_7c626649102a4549a26980a6f02a05ce.pdf
    • https://static.usrfiles.com/ugd/a2ebd8_0dc4a9ec16034539897d166321199f85.pdf
    • https://static.usrfiles.com/ugd/b8c837_e45a47ae454042fc8c8f333d4e471f4e.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_off0000646d.bin
a9fa51b1d3fa6a1e1f8981e8db4885f0cb207458ded56beb9063eba1a33df45f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x646D 5224 bytes
font_01_sfnt_off000075fc.bin
f052258bf716e97c39b9985b0d4dcacd398061c9edb39005846575edbf05b0b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x75FC 10724 bytes
font_02_sfnt_off00009ab6.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9AB6 4324 bytes

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