PDF malware analysis — malicious · 1ad498850851475c

MALICIOUS

PDF

43.1 KB Created: 2020-09-03 02:54:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: be9a20b08a50368a4b09f6eae8712c2f SHA-1: d46e327cfe54d2b722951c93403faf1de8652305 SHA-256: 1ad498850851475c788e23c09a22ff9ec93e90a68b551af9c2969032365ac4e8

128 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

This PDF document contains a malicious redirector link disguised as a lure for 'important english words in tamil'. The PDF also hosts a large number of external PDF links, many pointing to Shopify, likely as part of an SEO link farm to improve search engine ranking for malicious content. The primary malicious IOC is the ttraff.link redirector, which likely leads to further 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.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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.link/wix?keyword=important+english+words+in+tamil+pdf
- https://cdn.shopify.com/s/files/1/0432/0234/7168/files/vepexuwebanukuravesezifav.pdf
- https://cdn.shopify.com/s/files/1/0431/1855/9393/files/23010976343.pdf
- https://cdn.shopify.com/s/files/1/0429/4072/7463/files/96695842178.pdf
- https://cdn.shopify.com/s/files/1/0434/3965/3030/files/comparative_and_superlative_adjectives_explanation.pdf
- https://cdn.shopify.com/s/files/1/0431/0168/3873/files/bolinuwusoliwesev.pdf
- https://static.usrfiles.com/ugd/11f207_734254cb61dd4509b278caac99eb36cc.pdf
- https://static.usrfiles.com/ugd/f65518_4a97697da4524b7e9a6c1255b6310773.pdf
- https://static.usrfiles.com/ugd/9e41f0_dbb2d4a26e894ed481ce2a589295d5de.pdf
- https://static.usrfiles.com/ugd/b8c837_32975b8428db4debb5f0b5f227053f85.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90296180399.pdf
- https://cdn.shopify.com/s/files/1/0437/2067/1384/files/vufiduladafiweb.pdf
- https://cdn.shopify.com/s/files/1/0434/5505/3989/files/dotaxeget.pdf
- https://cdn.shopify.com/s/files/1/0447/4735/8362/files/balgeet_gujarati_free_download.pdf
- https://cdn.shopify.com/s/files/1/0428/6644/2406/files/natakenititomivitenemuma.pdf
- https://cdn.shopify.com/s/files/1/0430/0426/4601/files/funowanajexunu.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_off00006aba.bin` `f0c89d9b4541cb9971a05b0f2eb98891792073b91100f3e27c982a6be04c074e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6ABA	5484 bytes
`font_01_sfnt_off00007d47.bin` `860a58070d621802c299524922366f2f1a0c9359eef2f48e496837f35ea8a7ec`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D47	10080 bytes

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