Malicious PDF — malware analysis report

Static analysis result for SHA-256 77dc350f0271ef53…

MALICIOUS

PDF

69.7 KB Created: 2020-09-05 13:40:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 923919415be7db24adee1a03c3568aa6 SHA-1: 6634c5559cd5b05b2de028915a4abf594e072a32 SHA-256: 77dc350f0271ef530e2ee081e97dcc1d2ef6865cdd746c6893d62f19a45f5a32
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a known malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm designed to manipulate search engine results. The embedded URL https://ttraff.link/wix?keyword=gestalt+psychotherapy+pdf is the primary indicator of malicious intent, likely serving as a lure to a phishing or malware distribution site.

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.link/wix?keyword=gestalt+psychotherapy+pdf
    • https://static.usrfiles.com/ugd/b8c837_f75d0ced24b24eb597af283b00288375.pdf
    • https://static.usrfiles.com/ugd/89c6ad_b0fe6fb0f7854a7db37c2743d0df3238.pdf
    • https://static.usrfiles.com/ugd/fef806_c7cd61eca33343ea86328501aa51880d.pdf
    • https://static.usrfiles.com/ugd/0049ca_2e1d2fb52830416697da26a9ab288769.pdf
    • https://static.usrfiles.com/ugd/96bf9d_f3777ae1460744039195990db8ff14ac.pdf
    • https://static.usrfiles.com/ugd/57c819_d4f86a8af74b402197ea9b6343d680de.pdf
    • https://static.usrfiles.com/ugd/33ab24_4d71b4ae4e2e4e97aee37b39a3785557.pdf
    • https://cdn.shopify.com/s/files/1/0433/3741/6869/files/wilaxomonenidezumugijug.pdf
    • https://cdn.shopify.com/s/files/1/0462/7690/3072/files/les_rougon_macquart_collection_compl.pdf
    • https://cdn.shopify.com/s/files/1/0465/5493/9542/files/fuat_sezgin.pdf
    • https://cdn.shopify.com/s/files/1/0434/6678/4932/files/vegamoxolinegavaxujexoj.pdf
    • https://cdn.shopify.com/s/files/1/0438/3208/2594/files/usa_visa_application_form_in_china.pdf
    • https://static.usrfiles.com/ugd/3bf302_06de5c5d9c744ea9b87d2f65dd0d4f16.pdf
    • https://static.usrfiles.com/ugd/9ec29b_4e5f768f0a1443b0ba89f4ef7658fba9.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_off0000d515.bin
86e0be60ddc0f74c7a8e17e15337e4a7735525dc0f1f4e8c74e3abf0d316a033		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD515 5376 bytes
font_01_sfnt_off0000e763.bin
ad5e2aac726b8f4743d6b12a0ae0a087da563af1a2b7271717812f4963763f20		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE763 10076 bytes

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