Malicious PDF — malware analysis report

Static analysis result for SHA-256 de58d975af180a63…

MALICIOUS

PDF

43.4 KB Created: 2020-08-09 04:01:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 81642bb0daee1bb1b9da0ae389deedd6 SHA-1: 1675d80bd101486431053465a891238f008588af SHA-256: de58d975af180a6344b33f9daaf65cbca2d7804196c77c3ef0fd9a783bab1ab6
120 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=authoring+a+phd+dunleavy+pdf'. This suggests a phishing or scam attempt, using the document content as a lure. The presence of a large number of external PDF links, many hosted on Shopify, further supports the idea of a link farm or SEO manipulation tactic 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.com/pify?keyword=authoring+a+phd+dunleavy+pdf
    • http://files.treefortlearning.org/uploads/1/3/0/8/130874627/webojiwavogarafep.pdf
    • http://files.battleagainsthunger.org/uploads/1/3/1/0/131070827/2ebfafbdf45dfbe.pdf
    • http://files.kathleenconley.com/uploads/1/3/1/6/131606876/facc9a.pdf
    • https://cdn.shopify.com/s/files/1/0440/7079/7462/files/arteriografia_coronaria.pdf
    • https://cdn.shopify.com/s/files/1/0431/5057/3724/files/business_plan_sample_for_bakery.pdf
    • https://cdn.shopify.com/s/files/1/0428/5880/7455/files/49915945015.pdf
    • https://cdn.shopify.com/s/files/1/0437/8561/7566/files/nejosijeda.pdf
    • https://cdn.shopify.com/s/files/1/0430/0200/3619/files/57267666304.pdf
    • https://cdn.shopify.com/s/files/1/0429/1490/6275/files/zizudujesibe.pdf
    • https://cdn.shopify.com/s/files/1/0432/6031/3768/files/27299553775.pdf
    • https://cdn.shopify.com/s/files/1/0433/6071/4904/files/mukuzigi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3488/5796/files/vilivezonix.pdf
    • https://cdn.shopify.com/s/files/1/0431/0004/5469/files/dazumedejoniwaf.pdf
    • https://cdn.shopify.com/s/files/1/0428/7430/6727/files/dozomogofevibumus.pdf
    • https://cdn.shopify.com/s/files/1/0430/1750/2869/files/turawagogu.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_off00006c06.bin
1e33e5a57ef99d46662f815ffdeab64acc0f7b022103073718e30c4f6e149779		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C06 5276 bytes
font_01_sfnt_off00007e05.bin
3748bb1a9c2bc2773f6496ebe5668aeb205cdf17c1acf5b557efb375aca53dea		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E05 10240 bytes

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