Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5614387354b0d92…

MALICIOUS

PDF

47.9 KB Created: 2020-09-04 19:48:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 10b90c6c6d84ed2711d0a41cc292a753 SHA-1: 9167a345f7772f92903f7b710ca8773cf2417a5e SHA-256: d5614387354b0d9211f927e4bd9204b79ec9ef0eea0c89e509da836749155aaa
152 Risk Score

Malware Insights

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

The PDF document contains embedded links, one of which, 'https://ttraff.me/wix?keyword=admango+ad+spend+report', is identified as a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is an 'Admango ad spend report', likely a lure to entice users to click the malicious link. The presence of numerous other PDF links also points to a link farm strategy.

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=admango+ad+spend+report
    • https://static.usrfiles.com/ugd/b8c837_782299235530450c9058303eeaf824af.pdf
    • https://static.usrfiles.com/ugd/b8c837_1a3a734cf46e429b9e3999b0607068bf.pdf
    • https://static.usrfiles.com/ugd/b8c837_57ce9fba7b8f487da62bb35dc16ce0a2.pdf
    • https://cdn.shopify.com/s/files/1/0462/2375/3370/files/dead_island_steam.pdf
    • https://static.usrfiles.com/ugd/b8c837_e11ca8e0172f4fe2b578c08cd5c2c96b.pdf
    • https://static.usrfiles.com/ugd/760101_46811cb2690d448aa72791221e8050cb.pdf
    • https://static.usrfiles.com/ugd/3eed2b_85ec92ef677c4729bb7ebe3baa8b9529.pdf
    • https://static.usrfiles.com/ugd/76de1a_2f9c9ba438db4085a7d96b90291cd485.pdf
    • https://static.usrfiles.com/ugd/ecec20_3f9d5de01e5c476aa1f25dd719358755.pdf
    • https://static.usrfiles.com/ugd/516574_9d3811a3c57a4b2284896780388de903.pdf
    • https://static.usrfiles.com/ugd/b8c837_98cd7f61adbf4dd3a33e90340b305af8.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a0e6b96e0054e66b3df5e7edf94b590.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_off00006380.bin
ce3265afcb071a817f559c6d4c1e9284d621814e696ee3ac265e97791074c0c7
pdf-font-stream PDF embedded font (sfnt) at offset 0x6380 7584 bytes
font_01_sfnt_off00007cb4.bin
03956e5f0f2c11928610cbb2f2b6b3d039220b10dbe3cd78a0dfcc7da0a29c6f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CB4 5236 bytes
font_02_sfnt_off00008e6b.bin
fe766de1a913d3e33e3b87330061d715a6728aa1b5f9210619e3f2ca39ccc354
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E6B 10728 bytes