Malicious PDF — malware analysis report

Static analysis result for SHA-256 b594c9aa5ec3deb3…

MALICIOUS

PDF

47.1 KB Created: 2020-08-15 00:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6550f099a15fa1a33cf1331f18878871 SHA-1: e8f50100c8f4069c1ab096409be79c131c339a4c SHA-256: b594c9aa5ec3deb3fdca7ab0095204cc784570a7724bf52a3d25c03c0ca41a03
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'explain the branches of psychology pdf' and includes the malicious URL https://ttraff.cc/pify?keyword=explain+the+branches+of+psychology+pdf. This URL is designed to redirect users to potentially harmful content, likely a phishing or malware distribution site. 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.cc/pify?keyword=explain+the+branches+of+psychology+pdf
    • http://supovoli.sftfurniture.com/uploads/1/3/0/7/130738792/9877500.pdf
    • http://files.liveopenly.net/uploads/1/3/0/7/130776142/timefigasalo_fefuriridijudew_sozerajiwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6579/4965/files/10282225155.pdf
    • https://cdn.shopify.com/s/files/1/0430/1409/5001/files/java_8_features_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0435/7016/7967/files/parurunatok.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/90379225571.pdf
    • https://cdn.shopify.com/s/files/1/0430/7235/6509/files/lavupevavut.pdf
    • https://cdn.shopify.com/s/files/1/0432/2135/2606/files/tenepamosisakabetufat.pdf
    • https://cdn.shopify.com/s/files/1/0434/2690/6264/files/11077289237.pdf
    • https://cdn.shopify.com/s/files/1/0430/4021/1105/files/zesegovuxemavewelinu.pdf
    • https://cdn.shopify.com/s/files/1/0435/6738/2687/files/msculos_agonistas_antagonistas_e_sinergistas.pdf
    • https://cdn.shopify.com/s/files/1/0433/6861/1998/files/kevajaw.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_off00007169.bin
052330127e7dd62a85e45de7405d3079c4a2c68f5c58f27c440f71f9823b2792		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7169 5684 bytes
font_01_sfnt_off000084aa.bin
c0c237c9bb049db75a1c6a44aa3b04c53eef58c2d66308432fa4a65eae3e0963		 pdf-font-stream PDF embedded font (sfnt) at offset 0x84AA 13604 bytes

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