PDF malware analysis — malicious · ab963751bc8d4b5a

MALICIOUS

PDF

45.7 KB Created: 2020-08-07 12:53:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 65dd0c3f60a237364bd1a10a1b487e56 SHA-1: a7159f632b0d69247336b89fd164f8c5bfc9391b SHA-256: ab963751bc8d4b5aea89900d8ddc118d36e60011ba2f41c6b59255b57b0bf918

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

This PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various domains. One of these links, 'https://ttraff.com/pify?keyword=intermediate+grammar+games+pdf+vk', is identified as a malicious redirector. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of numerous links to external PDFs indicates a link farm or SEO poisoning tactic to distribute malicious content.

Heuristics 4

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.
Urgency / deadline lure low SE_URGENCY_LURE

Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
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=intermediate+grammar+games+pdf+vk
- http://files.volcano-blog.com/uploads/1/3/0/8/130874125/tumepelatixa.pdf
- http://files.enhanceplacementstories.com/uploads/1/3/0/8/130814575/5361933.pdf
- http://files.azlife.church/uploads/1/3/0/8/130874124/mesamil_kegekar.pdf
- http://files.maryhagenauthorromance.com/uploads/1/3/0/7/130740097/941d132e556.pdf
- https://cdn.shopify.com/s/files/1/0437/6713/6413/files/71097223795.pdf
- https://cdn.shopify.com/s/files/1/0430/5059/8562/files/degetaguzatamapisoba.pdf
- https://cdn.shopify.com/s/files/1/0450/4512/1182/files/expressions_equations_and_inequalities.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lajuvifubukakevo.pdf
- https://cdn.shopify.com/s/files/1/0432/7076/6750/files/56645971873.pdf
- https://cdn.shopify.com/s/files/1/0431/8488/1825/files/75365228208.pdf
- https://cdn.shopify.com/s/files/1/0428/7676/4327/files/67829120958.pdf
- https://cdn.shopify.com/s/files/1/0432/6473/7448/files/9093267553.pdf
- https://cdn.shopify.com/s/files/1/0438/2015/5042/files/tuning_pid_controller.pdf
- https://cdn.shopify.com/s/files/1/0431/7157/8007/files/user_acceptance_testing_tutorial.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.

Filename	Kind	Source	Size
`font_00_sfnt_off000074bf.bin` `9c75ab97ebada715abfea87a02183f29c5c0d7cd7bf315815be32a630a32310d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x74BF	5392 bytes
`font_01_sfnt_off0000870c.bin` `8e09b5e484da1984728e3de1798d400743cedea505b7bfdfabf7812c7f2770c7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x870C	10180 bytes

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