Malicious PDF — malware analysis report

Static analysis result for SHA-256 d648744766073914…

MALICIOUS

PDF

40.6 KB Created: 2020-08-03 17:17:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8514a14857e6fdcb45f627cc6096a690 SHA-1: f38699e0e9ef2c4a39ff9477250578ca01413899 SHA-256: d6487447660739145260e769e6d24cb02f00614e461e6f0f992c76a25469cbbc
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with the primary redirector URL being https://ttraff.com/pify?keyword=2020+ashrae+handbook+pdf. This indicates a phishing or scam attempt designed to lure users to malicious content. The document body itself is heavily obfuscated and contains embedded URLs, further supporting the malicious intent. No scripts were extracted from this sample.

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=2020+ashrae+handbook+pdf
    • http://files.veneerconcepts.com/uploads/1/3/1/4/131437276/4419518.pdf
    • http://files.caberlight.net/uploads/1/3/2/8/132816096/89ca786c2a493.pdf
    • http://files.jfrancoist-shirtsdesigns.com/uploads/1/3/0/7/130775245/3280940.pdf
    • https://cdn.shopify.com/s/files/1/0436/3842/3710/files/bench_press_program.pdf
    • https://cdn.shopify.com/s/files/1/0432/2417/0664/files/53577860143.pdf
    • https://cdn.shopify.com/s/files/1/0434/0740/9308/files/kejolosidugovaruritigej.pdf
    • https://cdn.shopify.com/s/files/1/0436/0683/5358/files/duzowepewurefuw.pdf
    • https://cdn.shopify.com/s/files/1/0439/8222/5566/files/jazigukerabodobuvebonavuv.pdf
    • https://cdn.shopify.com/s/files/1/0432/1394/7041/files/cub_cadet_repair_manual.pdf
    • https://cdn.shopify.com/s/files/1/0433/8361/9736/files/ladenerim.pdf
    • https://cdn.shopify.com/s/files/1/0432/0795/0495/files/98033439007.pdf
    • https://cdn.shopify.com/s/files/1/0431/9117/3278/files/waridiluvurawusalelezidi.pdf
    • https://cdn.shopify.com/s/files/1/0431/0836/8545/files/union_in_c.pdf
    • https://cdn.shopify.com/s/files/1/0430/0367/4785/files/85829160003.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_off000061c7.bin
8d0d1e42127938280558e6c0c86fe64d238429db4258933a07efdb1d49dc9fe0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C7 5480 bytes
font_01_sfnt_off00007458.bin
fe70de95365626154cde21929b36a0370e553688c9ba83d02f6cb68d6dc785ac		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7458 9876 bytes

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