PDF malware analysis — malicious · abc5350c52255b3f

MALICIOUS

PDF

41.1 KB Created: 2020-07-28 09:42:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 93646477fb048f45004665e9652c361e SHA-1: 8747535ec6107629f9b9ee2c522aad7af8fc24b5 SHA-256: abc5350c52255b3f8b574365b1eaba25de58ef2247632263a0c0402bba629ecd

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a link farm, with multiple embedded URLs pointing to various PDF files hosted on Shopify. One of these URLs, 'https://ttraff.ru/pify?keyword=composition+of+functions+practice+worksheet+answers', is identified as a malicious redirector. The document body, though heavily obfuscated, suggests a lure related to 'composition of functions practice worksheet answers'. The primary attack pattern involves redirecting users to malicious infrastructure through a deceptive document.

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.ru/pify?keyword=composition+of+functions+practice+worksheet+answers
- http://files.lahlitah.com/uploads/1/3/1/6/131606003/kinijoxavezunazujemo.pdf
- http://files.reformanortheast.org/uploads/1/3/0/8/130873708/tovodir.pdf
- http://files.emanuellutherandaycare.com/uploads/1/3/1/4/131483097/2894733.pdf
- http://files.stephaniepercydoula.com/uploads/1/3/0/7/130775635/1474063.pdf
- https://cdn.shop
- https://cdn.shopify.com/s/files/1/0432/0778/6654/files/86245743775.pdf
- https://cdn.shopify.com/s/files/1/0437/7726/1729/files/jimokaxizufitebevifi.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sividejujim.pdf
- https://cdn.shopify.com/s/files/1/0429/3092/9827/files/93407224916.pdf
- https://cdn.shopify.com/s/files/1/0438/1832/0034/files/84084707894.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/56655156305.pdf
- https://cdn.shopify.com/s/files/1/0431/4831/2738/files/57577219742.pdf
- https://cdn.shopify.com/s/files/1/0429/7146/3831/files/takitirovotagunasa.pdf
- https://cdn.shopify.com/s/files/1/0434/2428/4824/files/42553499952.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90142435821.pdf
- https://cdn.shopify.com/s/files/1/0430/6547/5226/files/nibovenuwiwawitenevok.pdf
- https://cdn.shopify.com/s/files/1/0431/8868/2916/files/6043538109.pdf
- https://cdn.shopify.com/s/files/1/0430/8277/6727/files/59466735989.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_off00006103.bin` `ee6e6029dc633bb0db2893327bcf4a535b8453552d8b69a1dd0dba56e959c843`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6103	5284 bytes
`font_01_sfnt_off000072e3.bin` `cf24bb1d1f238142693590f4df6e7d57b30d31df7bac001eddf80e6764039e46`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x72E3	10052 bytes

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