Malicious PDF — malware analysis report

Static analysis result for SHA-256 43625b1f3e5ba96e…

MALICIOUS

PDF

73.8 KB Created: 2020-08-05 07:29:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 29c9891a2b6296ef99b0c1ab2e6c434e SHA-1: 454a9a95c722d1b178b86c0fa72d432797d1dabd SHA-256: 43625b1f3e5ba96ea46c732777b1b735698972da1dcbab2f761b39cd079f6e2b
162 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains multiple heuristics indicating malicious intent, including a critical finding of a link to a known malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be the primary lure. The 'SE_CLIPBOARD_COMMAND_LURE' heuristic suggests the document may also attempt to trick the user into executing commands, potentially to download further payloads.

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.
  • Clipboard command execution lure high SE_CLIPBOARD_COMMAND_LURE
    Document tells the user to copy or paste clipboard content into Run, PowerShell, cmd, or another shell-like execution context
  • 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/pify?keyword=canon+5d+mark+ii+brochure+pdf
    • http://files.cambridgeman.com/uploads/1/3/1/4/131483025/lijalovop.pdf
    • http://files.gailellensmith.com/uploads/1/3/0/7/130776254/33ef808d2485b.pdf
    • http://files.proyecto1867.com/uploads/1/3/2/3/132302913/mozolejemi-vexiramiga-leselu.pdf
    • https://cdn.shopify.com/s/files/1/0431/0158/5570/files/susikoxilom.pdf
    • https://cdn.shopify.com/s/files/1/0431/4890/2554/files/bodawewoxano.pdf
    • https://cdn.shopify.com/s/files/1/0434/5472/6310/files/19971401534.pdf
    • https://cdn.shopify.com/s/files/1/0429/5376/9123/files/too_much_many_enough_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/lutusigulili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rixaraxamixenapo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/naduz.pdf
    • https://cdn.shopify.com/s/files/1/0428/8158/1223/files/sigejepa.pdf
    • https://cdn.shopify.com/s/files/1/0427/9359/9132/files/kopibalalabupu.pdf
    • https://cdn.shopify.com/s/files/1/0435/5781/4431/files/alumni_registration_form.pdf
    • https://cdn.shopify.com/s/files/1/0431/2150/8506/files/69067878156.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_off0000d4b6.bin
fde91ef4885f77ab6c44dcb733d1865da3156bfe476462e6a2a262007aa4da69		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD4B6 5420 bytes
font_01_sfnt_off0000e6fc.bin
97052be4b7f56d4295e4d42aad5df96287e097ffd537081fbd0d594c728f755b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE6FC 16668 bytes

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