Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc55c9fecd1a89b7…

MALICIOUS

PDF

39.4 KB Created: 2020-08-26 23:29:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5cd409882ec26bf66338e454022a8522 SHA-1: 0c6d7823848917cb1f74ccdbc69665f7022c4bf7 SHA-256: dc55c9fecd1a89b795443a94d8a1001f207ac1ad9b41295eb429f1c238a91719
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/pify?keyword=sean+kingston+download+album`. This URL is likely part of a phishing or scam campaign, attempting to trick users into downloading malware or visiting further malicious sites. The document body, though heavily obfuscated, contains the same lure text and URLs, reinforcing the malicious intent. The presence of numerous other PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility.

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=sean+kingston+download+album
    • http://files.hsngenomics.org/uploads/1/3/0/7/130775154/pawito.pdf
    • http://files.thetrashtalkblog.com/uploads/1/3/1/4/131408581/4648200.pdf
    • http://files.flatrockfragrances.com/uploads/1/3/1/3/131381679/watevidiru.pdf
    • http://bivibutil.forventuretravel.com/uploads/1/3/0/8/130874197/ladojuranamekeret.pdf
    • https://cdn.shopify.com/s/files/1/0431/1921/4756/files/25918579278.pdf
    • https://cdn.shopify.com/s/files/1/0437/3377/8597/files/20210892545.pdf
    • https://cdn.shopify.com/s/files/1/0429/1543/0553/files/gipekuduxiruvebefe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2186/8960/files/zirikusub.pdf
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/56204455122.pdf
    • https://cdn.shopify.com/s/files/1/0433/5969/9109/files/rivaxivemobitonabu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3429/5966/files/the_cell_cycle_mitosis_and_meiosis_worksheets.pdf
    • https://cdn.shopify.com/s/files/1/0438/9866/7163/files/dvsn_think_about_me_download.pdf
    • https://cdn.shopify.com/s/files/1/0437/0975/9640/files/livelerutaxuke.pdf
    • https://cdn.shopify.com/s/files/1/0431/4251/2802/files/tofupigaka.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_off00005935.bin
2b74d385c14d131d263da238f12c0fd48b34552c90e2782f479dd9cdd964784a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5935 5448 bytes
font_01_sfnt_off00006bbc.bin
a29095e3a2c195882f32c0b4424eb765a888c31ed970f40be33d1cf5ae66a0df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6BBC 10900 bytes

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