Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfdccc39b413e253…

MALICIOUS

PDF

60.3 KB Created: 2020-08-05 13:15:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5badc1a1dc19fb6d671a2f6299eb3ddf SHA-1: 30548e3a150d6aa0e9ee6875b373e3d0252c14ed SHA-256: dfdccc39b413e253e4b5ac7dd7c2c0deb298e9e66fbc19f439480cc9cb16a744
120 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which point to potentially malicious redirectors or unknown domains. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags a link to 'ttraff.cc', indicating a redirection to a harmful destination. The document body, though heavily obfuscated, also contains this URL, suggesting it is the primary lure. The presence of numerous SEO-optimized PDF links further supports the idea of a link farm designed to distribute malicious content.

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=metabolomics+book+pdf
    • http://files.parkesaog.com/uploads/1/3/1/4/131454620/3961765.pdf
    • http://files.trueleadershipretreat.org/uploads/1/3/0/9/130969751/6638387.pdf
    • http://files.vanderbiltfarmersmarket.com/uploads/1/3/2/8/132814241/680526.pdf
    • http://files.in-touch.org/uploads/1/3/1/3/131398069/290a35cb79f.pdf
    • https://cdn.shopify.com/s/files/1/0431/9212/3560/files/whats_in_the_box_meme.pdf
    • https://cdn.shopify.com/s/files/1/0439/1780/3675/files/mutosiruverisube.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/10499001311.pdf
    • https://cdn.shopify.com/s/files/1/0437/6294/2101/files/bobirijulasilozaxo.pdf
    • https://cdn.shopify.com/s/files/1/0436/1755/0499/files/fuxewirukedi.pdf
    • https://cdn.shopify.com/s/files/1/0433/5733/9800/files/lozedapufiride.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/37872338034.pdf
    • https://cdn.shopify.com/s/files/1/0429/9603/9833/files/kolovutobubiri.pdf
    • https://cdn.shopify.com/s/files/1/0432/6578/6006/files/questionnaire_on_drug_abuse_among_youth.pdf
    • https://cdn.shopify.com/s/files/1/0430/4535/5674/files/jajevaziv.pdf
    • https://cdn.shopify.com/s/files/1/0430/8451/3444/files/34342446212.pdf
    • https://cdn.shopify.com/s/files/1/0434/1897/6414/files/safety_harness_parts_name.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_off0000a6ef.bin
e8764dcd6e2cfa911b7574beb0e0250af8e9a43384f14b0698c126360bd0e8bb		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA6EF 5416 bytes
font_01_sfnt_off0000b956.bin
f4b6d06f1fbdadb483113b9d313b324d34403c918c111992e0263f211efe734e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB956 13468 bytes

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