PDF malware analysis — malicious · b047b49f3cc5ee90

MALICIOUS

PDF

112.9 KB Created: 2020-07-28 14:49:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3d980d639bef53140e161c6149ccf1af SHA-1: 50ea6deadb49baf045cb5b2a81d6f164133a422a SHA-256: b047b49f3cc5ee90081287efdbe946c0b59364d48b7633560b5d60aec872bf7c

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF contains a heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=bootstrap+search+form+full+width'. Additionally, it exhibits characteristics of a PDF SEO link farm, with numerous links to external PDFs, including one hosted on cdn.shopify.com. The document body, though heavily obfuscated, contains text related to 'Bootstrap search form' and 'wkhtmltopdf', suggesting a lure to disguise the malicious intent. The primary attack pattern involves redirecting the user to a malicious site.

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.cc/pify?keyword=bootstrap+search+form+full+width
- http://files.innerfireherbals.com/uploads/1/3/1/0/131071082/jigojik.pdf
- http://files.emilyhauze.com/uploads/1/3/2/6/132695321/maxifizowinasew-pibinukajoguge-mokosi.pdf
- http://files.mitsuhiro-ikeda.com/uploads/1/3/0/9/130969761/f88e9e1ff5af.pdf
- http://files.nwoqmra.com/uploads/1/3/1/4/131453124/9495074.pdf
- https://cdn.shopify.com/s/files/1/0432/4891/0498/files/19638573232.pdf
- https://cdn.shopify.com/s/files/1/0435/0866/2440/files/54973352653.pdf
- https://cdn.shopify.com/s/files/1/0433/9105/8078/files/konikan.pdf
- https://cdn.shopify.com/s/files/1/0431/0800/8090/files/gejejajazeji.pdf
- https://cdn.shopify.com/s/files/1/0427/9166/5830/files/pogusisarezitomaleforipi.pdf
- https://cdn.shopify.com/s/files/1/0435/0876/0735/files/32099688585.pdf
- https://cdn.shopify.com/s/files/1/0430/9522/8565/files/sejamimanudetiju.pdf
- https://cdn.shopify.com/s/files/1/0432/2381/0203/files/68510370283.pdf
- https://cdn.shopify.com/s/files/1/0431/5742/2229/files/sapovavoxunotameboxaliru.pdf
- https://cdn.shopify.com/s/files/1/0439/1131/5611/files/kokorovulesof.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/xaxigeruver.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_off00012341.bin` `55b0ea6420d3ca511b7d204c0543268b84c0f9b9d4a91e9edc2250bb754eafd7`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x12341	24948 bytes
`font_01_sfnt_off00016b86.bin` `381dffb1670906edd4e9c63d60f56f4a4d42a42bc67b4ea58d3ee03495ebbf0a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16B86	5312 bytes
`font_02_sfnt_off00017daf.bin` `06164069e47ef20ae9f7b40591cb6989258c5fe29d4d47e13b6bbef4f166fd7c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17DAF	18064 bytes

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