PDF malware analysis — malicious · a9a66db5b5486a3f

MALICIOUS

PDF

47.7 KB Created: 2020-08-05 14:49:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a45577618d0ca1c2fae702468aea6fb3 SHA-1: 8aa225025b9c3818b95a07ad0e4d5c646feb710c SHA-256: a9a66db5b5486a3f2a1b780b78462baae3b331f01e031f37114c6ddb355fd73d

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link, directing users to 'https://ttraff.com/pify?keyword=teaching+phonics+worksheets+pdf'. This URL is likely part of a phishing or social engineering campaign to lure victims to a malicious site. The document also contains a large number of embedded links, many pointing to Shopify domains, which is characteristic of SEO link farms used to manipulate search engine rankings or distribute malicious content. No scripts were extracted from this sample.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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=teaching+phonics+worksheets+pdf
- http://files.genesisradio.net/uploads/1/3/0/8/130874142/48c39501bc7d.pdf
- http://files.rhpcollegecounseling.com/uploads/1/3/1/0/131070393/69fafc35cb00b.pdf
- http://files.schoeffel.com.tw/uploads/1/3/0/9/130969489/limojazuj.pdf
- http://files.friendswithflightbenefits.com/uploads/1/3/1/3/131380390/3273742.pdf
- http://files.designby-faith.com/uploads/1/3/1/8/131871874/762d9dca.pdf
- https://cdn.shopify.com/s/files/1/0430/2903/7219/files/jadatavesafumekopebefu.pdf
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/31468848363.pdf
- https://cdn.shopify.com/s/files/1/0435/3985/7572/files/jujexuwulasilabofuwate.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/58933331969.pdf
- https://cdn.shopify.com/s/files/1/0428/0310/1863/files/mutagidoxu.pdf
- https://cdn.shopify.com/s/files/1/0440/1935/1710/files/78100967241.pdf
- https://cdn.shopify.com/s/files/1/0431/2491/6388/files/mujalasudewiseguxiz.pdf
- https://cdn.shopify.com/s/files/1/0434/2077/8653/files/xotubez.pdf
- https://cdn.shopify.com/s/files/1/0434/2962/6017/files/rukipesefo.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000707e.bin` `2a8644edc132e0963b9008685dd1a0178c66b77e606abf53e1f2dc30879e1446`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x707E	3144 bytes
`font_01_sfnt_off00007ba0.bin` `f2da0e15f64d6a92db90d09f266f699199436a0840cb68357fea0fa765d99fc8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BA0	5488 bytes
`font_02_sfnt_off00008e54.bin` `b56887f404daf437e64dd738cc09c09d7f49d8d1533cefe8f83edc4b4c5c3b2c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8E54	10344 bytes

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