Malicious PDF — malware analysis report

Static analysis result for SHA-256 81618a72fd489a2f…

MALICIOUS

PDF

60.7 KB Created: 2020-07-28 20:54:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d1e0722306156413ca4ae4958802bb6 SHA-1: 1412681d2cfb1e1b0019e4a52b51ba489371d4c9 SHA-256: 81618a72fd489a2f131bce4cabc0fa0c541b2d48fdf6781b012b950f7d98c0c4
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which are designed to appear as legitimate PDF files hosted on various domains. One of these links, https://ttraff.cc/pify?keyword=ernakulam+district+map+pdf, redirects to known malicious infrastructure, indicating a phishing or redirection attempt. The presence of a link farm and a malicious redirector strongly suggests a social engineering attack aimed at leading the user to a harmful destination.

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/pify?keyword=ernakulam+district+map+pdf
    • http://files.victoria-security.com/uploads/1/3/0/7/130776511/mekog_jesatokasuzisi_mibilugorapumo_vukesogezafij.pdf
    • http://files.ardasphotography.com/uploads/1/3/1/4/131483153/zelotilibivunotapot.pdf
    • http://files.delightthyself.com/uploads/1/3/1/6/131607269/bogatexan.pdf
    • http://files.delightth
    • https://cdn.shopify.com/s/files/1/0429/4973/8650/files/pekumijenigezego.pdf
    • https://cdn.shopify.com/s/files/1/0430/8202/3061/files/gixoginewodo.pdf
    • https://cdn.shopify.com/s/files/1/0433/7329/7814/files/rawomajovonoroveletap.pdf
    • https://cdn.shopify.com/s/files/1/0430/6377/1293/files/kemarazamupa.pdf
    • https://cdn.shopify.com/s/files/1/0430/4211/1637/files/nejojezidojakijibenas.pdf
    • https://cdn.shopify.com/s/files/1/0430/1661/8145/files/ruxipiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/8122/7672/files/25023314554.pdf
    • https://cdn.shopify.com/s/files/1/0428/5746/3971/files/16536725220.pdf
    • https://cdn.shopify.com/s/files/1/0430/8588/9689/files/82466450859.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99237037604.pdf
    • https://cdn.shopify.com/s/files/1/0431/8806/0320/files/78992978383.pdf
    • https://cdn.shopify.com/s/files/1/0433/7729/5521/files/vozivaboziwawakesorines.pdf
    • https://cdn.shopify.com/s/files/1/0428/5785/7187/files/79346951271.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_off0000a768.bin
3a868adf7cbfe661310526ea5fc2f84a26a2bf94894f8a3c18a7aa513037a28f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA768 4976 bytes
font_01_sfnt_off0000b829.bin
c0281a4b754f447af1163d0111d49aa98aed5f04306d1553d81f0dfbe6d4993a		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB829 14600 bytes

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