Malicious PDF — malware analysis report

Static analysis result for SHA-256 8114bb77dedc5749…

MALICIOUS

PDF

49.4 KB Created: 2020-08-02 22:26:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 76d18b9630a6b6f0256afcb677f06820 SHA-1: 7e1d9af1c1533d4ff57760a4edc36144bd1bff28 SHA-256: 8114bb77dedc5749476d5f814f3b7e12dfb5edb0471ed2cfd281e3198c0ecff6
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is designed to lure users to further malicious content. Additionally, a PDF link farm heuristic indicates the presence of numerous external links, with 'cdn.shopify.com' being a dominant host. The document body, though heavily obfuscated, contains references to 'Symmetry financial group reddit' and the malicious URL, suggesting a social engineering pretext for directing users to potentially harmful sites.

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=symmetry+financial+group+reddit
    • http://files.pdxmusicminister.com/uploads/1/3/0/7/130738548/398364.pdf
    • http://files.tcoectc.org/uploads/1/3/1/4/131453902/a5197.pdf
    • http://files.enchantedboutiquemn.com/uploads/1/3/0/8/130814032/tivazodinemoxux.pdf
    • http://files.annaparkernaples.com/uploads/1/3/0/9/130969960/gifidikemebodabinu.pdf
    • https://cdn.shopify.com/s/files/1/0432/5064/7202/files/wexejetin.pdf
    • https://cdn.shopify.com/s/files/1/0429/6802/3194/files/89535557759.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0429/1274/3591/files/90060644652.pdf
    • https://cdn.shopify.com/s/files/1/0434/3431/1845/files/nowizideviw.pdf
    • https://cdn.shopify.com/s/files/1/0431/4877/1488/files/82954067032.pdf
    • https://cdn.shopify.com/s/files/1/0440/8508/4310/files/zilejetokajomerusa.pdf
    • https://cdn.shopify.com/s/files/1/0433/6150/1334/files/73014528701.pdf
    • https://cdn.shopify.com/s/files/1/0434/4256/9383/files/7597223233.pdf
    • https://cdn.shopify.com/s/files/1/0438/7520/5288/files/50614132521.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_off00008247.bin
a712ae5958690b80128126e92c56d5633ffb4802fa8fce0feb51f1850eec8883		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8247 5504 bytes
font_01_sfnt_off000094f0.bin
0830b87b0e2ceac677709c0999ceb6b4f204b494eaedf3e68a89e22615a37df0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x94F0 10620 bytes

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