PDF malware analysis — malicious · fb33bb7162af7c62

MALICIOUS

PDF

40.3 KB Created: 2020-08-17 03:30:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 013b3ca9932075109581367241fe60d3 SHA-1: a5c13174306dcd5dbbbf6f2e365bf8e526055a22 SHA-256: fb33bb7162af7c625c4b33850c6b006df99bef08df4528a4ba0534c279adc615

158 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains embedded JavaScript and a large number of links, including one to a known malicious redirector. The PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM heuristics indicate that the document is designed to redirect users to malicious infrastructure or to manipulate search engine results. The embedded JavaScript likely serves to further obfuscate the malicious intent or to initiate a download. The primary malicious IOC is the redirector URL.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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=banff+sunshine+snow+report
- http://files.tulipcity.org/uploads/1/3/0/8/130874433/fuxugeni_ferulepav_lagomeji_luwuvukaru.pdf
- http://dabinula.witeaze.com/uploads/1/3/2/3/132302857/pilunikesuxa.pdf
- http://zonon.susanlane-gardenscapes.com/uploads/1/3/2/6/132695663/pajapiluxop_kibebuz.pdf
- http://files.heartlandfeeding.com/uploads/1/3/2/6/132681294/140417cf.pdf
- https://cdn.shopify.com/s/files/1/0432/2315/4850/files/product_evaluation_report_example.pdf
- https://cdn.shopify.com/s/files/1/0435/4460/8932/files/virtualbox_exit_scaled_mode.pdf
- https://cdn.shopify.com/s/files/1/0434/2258/0886/files/10604941704.pdf
- https://cdn.shopify.com/s/files/1/0429/6946/4991/files/26862209297.pdf
- https://cdn.shopify.com/s/files/1/0431/3628/6877/files/bimijixop.pdf
- https://cdn.shopify.com/s/files/1/0439/2153/9240/files/79086120326.pdf
- https://cdn.shopify.com/s/files/1/0428/9350/8771/files/34048005765.pdf
- https://cdn.shopify.com/s/files/1/0431/6305/8340/files/gumanisawofibikizugif.pdf
- https://cdn.shopify.com/s/files/1/0434/0131/4454/files/convert_to_word_online_zamzar.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65788935473.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_off00005f54.bin` `206d64ac7ad87c95ca65123c2a6458e8c5efca1aa58a58c3f389e17691ecc53c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5F54	5096 bytes
`font_01_sfnt_off000070b4.bin` `e412bcd9e66725fca0e4c829beadbbe05e0e2f6546562c7ac90baa569ceb8bba`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x70B4	10460 bytes

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