Malicious PDF — malware analysis report

Static analysis result for SHA-256 e96cec8036952cee…

MALICIOUS

PDF

73.2 KB Created: 2020-08-31 12:07:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c48ee177f827195fd60088a2d143ac5 SHA-1: a509209df5ba34c33df2d7bf39d8ec521acd0040 SHA-256: e96cec8036952ceef89d255eed4a24b6c3c0e998f324c1f709bc95487bb4928a
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.ru/wix?keyword=elements+of+chemical+reaction+engineering+solution+manual'. Additionally, another critical heuristic indicates a PDF link farm, with numerous external PDF links hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same URL, suggesting a lure to download further content or redirect to a malicious site. The primary attack pattern involves leveraging these links to compromise the user.

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=elements+of+chemical+reaction+engineering+solution+manual
    • https://static.usrfiles.com/ugd/b8c837_8074e4e6fb15479d8a3e200b9c09d4bb.pdf
    • https://static.usrfiles.com/ugd/9cb927_42963cd5573342aa89a59f0d9928117e.pdf
    • https://static.usrfiles.com/ugd/a43ec6_047ec828a76a43d6b905cb200a245047.pdf
    • https://static.usrfiles.com/ugd/ea5d7b_8b143ff53e0e45cf9071549390ff2f18.pdf
    • https://static.usrfiles.com/ugd/4b874d_ace68a037a804b15a3d93f67f2dca1dd.pdf
    • https://static.usrfiles.com/ugd/c7a620_260147a3360f48aa9ebea368765ace47.pdf
    • https://static.usrfiles.com/ugd/bf0735_12bec1897fe8499e914d406b0c4033bd.pdf
    • https://static.usrfiles.com/ugd/afe78f_2fa59f63e492468d99d7fe1bc64b921a.pdf
    • https://static.usrfiles.com/ugd/b8c837_d3902005ac65449fa4739ab3008de5bf.pdf
    • https://cdn.shopify.com/s/files/1/0463/1707/6637/files/92040090602.pdf
    • https://cdn.shopify.com/s/files/1/0438/7468/0987/files/59099542636.pdf
    • https://cdn.shopify.com/s/files/1/0435/6381/0975/files/652499556.pdf
    • https://cdn.shopify.com/s/files/1/0462/7254/4917/files/driver_sound_card_asrock_g41m-_vs3_win7.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d0e6.bin
8498d59a0c410d0967d906a2a06c407c47808bd2dc342c4112308e4b7df18efc		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD0E6 5252 bytes
font_01_sfnt_off0000e296.bin
eff7b884c539a54656cad748fb17f7bc89ae951d52890db982c08a8f103ec28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE296 16972 bytes

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