Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad5b42297fb33c5e…

MALICIOUS

PDF

52.2 KB Created: 2020-09-01 18:40:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01f51638b4ecbdcafde42ebd2be2b088 SHA-1: 4d8ca2649b11ec684c371eba86f020c6776e440c SHA-256: ad5b42297fb33c5ef5f1563ef0122108f4cd5137297fd6ea2a942c96082b4227
150 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 'https://ttraff.me/wix?keyword=pathfinder+aether+kineticist+guide'. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The document body, though partially corrupted, contains the same redirector URL and appears to be a lure disguised as a guide.

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.me/wix?keyword=pathfinder+aether+kineticist+guide
    • https://cdn.shopify.com/s/files/1/0429/5986/3959/files/57936513696.pdf
    • https://cdn.shopify.com/s/files/1/0433/0582/8520/files/fofefep.pdf
    • https://cdn.shopify.com/s/files/1/0431/9959/4656/files/31303461256.pdf
    • https://cdn.shopify.com/s/files/1/0450/3427/4966/files/attaccamento_e_amore_grazia_attili.pdf
    • https://static.usrfiles.com/ugd/b916f4_cbc2cea0c8a249459f311e551d558314.pdf
    • https://static.usrfiles.com/ugd/b8c837_d1e4da36dce141feb0eaf4e5a9f6c9eb.pdf
    • https://static.usrfiles.com/ugd/b8c837_d29b6da89f4e451a858144568c89ffb1.pdf
    • https://cdn.shopify.com/s/files/1/0429/2512/9891/files/4044298113.pdf
    • https://cdn.shopify.com/s/files/1/0431/2439/2087/files/32520396021.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/82595467958.pdf
    • https://cdn.shopify.com/s/files/1/0433/5799/5160/files/judojomol.pdf
    • https://cdn.shopify.com/s/files/1/0434/7851/5864/files/come_sail_away_piano_sheet_music.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006974.bin
57ada55683f6ec26e91fad23ff56a51b055b58fa731891598a9ee69d70e23b74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6974 5088 bytes
font_01_sfnt_off00007aae.bin
65f1cc0258dd6599cb641386dd636fd40f2b2418d852e42cfddeced446fb1d6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAE 10856 bytes
font_02_sfnt_off00009ff6.bin
684a3c196e802b4dc45ee85e0d12f41c83d6b6c6a55a83cec5fb8e332ee9aa36		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF6 16376 bytes
font_03_sfnt_off0000b59e.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB59E 4324 bytes

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