Malicious PDF — malware analysis report

Static analysis result for SHA-256 dabe77c6ed7fbb46…

MALICIOUS

PDF

42.4 KB Created: 2020-09-13 12:44:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0113b0cf15c5c25de6dd6f4d53a57abe SHA-1: 635c13188a6cb263b11460c4253c297051efe828 SHA-256: dabe77c6ed7fbb46dd2a81cb9026e5f1f6d9ead96c108f7e10ab7147dba206c6
150 Risk Score

Malware Insights

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

The PDF file contains a lure related to 'Mitsubishi mr. slim mini split installation instructions' and embeds multiple links. One critical heuristic firing indicates that the PDF links to known malicious redirector infrastructure, specifically 'https://ttraff.cc/wix?keyword=mitsubishi+mr.+slim+mini+split+installation+instructions+.pdf'. This suggests the document is designed to redirect users to malicious sites. The ML classifier also strongly flagged this PDF as malicious.

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.cc/wix?keyword=mitsubishi+mr.+slim+mini+split+installation+instructions+.pdf
    • http://motemuxe.fbeckerphoto.com/uploads/1/3/0/7/130776279/ruvonuk.pdf
    • http://files.silversageffa.com/uploads/1/3/0/7/130740138/67cdbfea.pdf
    • http://vunaj.abillytee.com/uploads/1/3/1/6/131636665/fipojesiletebo.pdf
    • https://static.usrfiles.com/ugd/b42fd6_21cefdf9184b41fa833b2db4e4d7dfc6.pdf
    • https://static.usrfiles.com/ugd/694d5d_0f54b989b3964a4aa8cb051e128e7193.pdf
    • https://static.usrfiles.com/ugd/0511f5_1b67650100c44d82974ad27bcc88f70f.pdf
    • https://static.usrfiles.com/ugd/85c99c_6c4e6337853e4955a1c64fd4cd001d96.pdf
    • https://static.usrfiles.com/ugd/e42c35_2f96251d77b44e1fb8781a7f300501ef.pdf
    • https://cdn.shopify.com/s/files/1/0439/3651/4216/files/sesalasuna.pdf
    • https://cdn.shopify.com/s/files/1/0430/4715/7914/files/rowe_ami_jukebox.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_off00005a35.bin
396aad8de320cbc3daf6c23c06f261c8a1b7b5880cf67d99df766519774194fc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A35 5336 bytes
font_01_sfnt_off00006c1f.bin
0daad05d2ff3e08a994c78cf492c981826b20bf37eda32d2287e38355797952e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C1F 10064 bytes
font_02_sfnt_off00008e85.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E85 4324 bytes

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