PDF malware analysis — malicious · 543b9805abd9e706

MALICIOUS

PDF

48.1 KB Created: 2020-08-04 16:40:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 88081fb967179e7ba24bd7df3478b428 SHA-1: 85d253bc570e46b7d801b19a88da353c50709f78 SHA-256: 543b9805abd9e706869effa1c1238ce6a3d1b9cf8057929415823ebc37dc824c

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains embedded links that redirect to malicious infrastructure. Specifically, a link to 'ttraff.com' is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'periodic table trends worksheet answer key pdf', suggesting a social engineering lure to trick users into clicking the malicious link. The presence of multiple external PDF links, many hosted on Shopify, indicates a link farm strategy to improve search engine ranking and distribute the malicious payload.

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=periodic+table+trends+worksheet+answer+key+pdf
- http://files.dutchysmini.com/uploads/1/3/0/8/130813881/fokomudekekunenep.pdf
- http://files.thetravelenduro.com/uploads/1/3/0/7/130776126/9e547.pdf
- http://files.thebeprojectllc.com/uploads/1/3/0/8/130814411/zutevuveto.pdf
- https://cdn.shopify.com/s/files/1/0428/2508/9191/files/97920750336.pdf
- https://cdn.shopify.com/s/files/1/0427/9202/6271/files/bununepub.pdf
- https://cdn.shopify.com/s/files/1/0435/6459/7397/files/makano_dejame_entar.pdf
- https://cdn.shopify.com/s/files/1/0433/5170/3706/files/vozenetixiwuxivejuzo.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/9646434013.pdf
- https://cdn.shopify.com/s/files/1/0428/9275/5103/files/18916272116.pdf
- https://cdn.shopify.com/s/files/1/0430/9352/4637/files/powoxewonewiwexov.pdf
- https://cdn.shopify.com/s/files/1/0433/0923/6374/files/5127283394.pdf
- https://cdn.shopify.com/s/files/1/0437/9328/5277/files/subusupezipipipanupawanu.pdf
- https://cdn.shopify.com/s/files/1/0434/3191/9765/files/juvefujeluxej.pdf
- https://cdn.shopify.com/s/files/1/0436/5543/0302/files/nizadejinunazuvox.pdf
- https://cdn.shopify.com/s/files/1/0430/7812/3680/files/malopemax.pdf
- https://cdn.shopify.com/s/files/1/0432/0781/9422/files/75197910790.pdf
- https://cdn.shopify.com/s/files/1/0430/8333/3799/files/nuside.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/
- https://cdn.shopify.com/s/files/1/0428/2508/9191/files/97920750

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000079b1.bin` `98ffb25a8d4675ffc6e76d66045fdb457c19d7e3bc73f33b7cdc8bff6f681c1c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x79B1	5640 bytes
`font_01_sfnt_off00008cea.bin` `ec28bb544cfedb14f187442e07527354101e8cd37707753d4bfebde6215ccbdf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8CEA	10548 bytes

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