Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6f6be65a0ed0e84…

MALICIOUS

PDF

34.7 KB Created: 2020-08-10 04:00:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 870044c862fcb774a2170778bc7769f4 SHA-1: 060220f6d25823480f7b65f92d22e000a78b7b78 SHA-256: c6f6be65a0ed0e842696b90d7d257605bef054dae6682e41919d180247fa5565
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, specifically pointing to 'https://ttraff.com/pify?keyword=aesculap+neurosurgery+catalog+pdf'. This URL is embedded within the document body, disguised as a catalog. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The primary intent appears to be redirecting users to malicious infrastructure through a deceptive lure.

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.com/pify?keyword=aesculap+neurosurgery+catalog+pdf
    • http://files.ipropertiesjkt.com/uploads/1/3/1/4/131407877/2077166.pdf
    • http://files.upwardspiralcc.com/uploads/1/3/1/3/131398308/6416517.pdf
    • http://jezexikag.springvalleygirlssoccer.com/uploads/1/3/1/3/131383483/13dff.pdf
    • https://cdn.shopify.com/s/files/1/0429/8525/9159/files/88462092781.pdf
    • https://cdn.shopify.com/s/files/1/0432/0791/7729/files/96881475786.pdf
    • https://cdn.shopify.com/s/files/1/0429/5625/9491/files/56273567156.pdf
    • https://cdn.shopify.com/s/files/1/0434/3077/2902/files/principles_of_accounting_11th_class.pdf
    • https://cdn.shopify.com/s/files/1/0431/5699/6247/files/govut.pdf
    • https://cdn.shopify.com/s/files/1/0434/3909/5973/files/fodokijune.pdf
    • https://cdn.shopify.com/s/files/1/0438/9673/3864/files/nenodidevajetu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1961/6935/files/44573362516.pdf
    • https://cdn.shopify.com/s/files/1/0433/0638/5558/files/tinusazawonu.pdf
    • https://cdn.shopify.com/s/files/1/0434/0757/3157/files/fibexewimojib.pdf
    • https://cdn.shopify.com/s/files/1/0431/7826/2689/files/backtrack_5_manual.pdf
    • https://cdn.shopify.com/s/files/1/0437/2656/9633/files/63220338722.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_off00004a76.bin
3351785f277e68d00ce25135a17c6332d5e0bec21abdf95007e065b3ebe5d0ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4A76 5416 bytes
font_01_sfnt_off00005d00.bin
843215a9c12c7442c92ed1fa7f213248f93e7719d2068c1a96bc8c440e15f0f8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5D00 9608 bytes

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