PDF malware analysis — malicious · 1aa97ff1ffe713c6

MALICIOUS

PDF

41.8 KB Created: 2020-08-12 18:27:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c1438666da176936e2e62fe5eaf4da19 SHA-1: 0dd6dab898fa59b86d744d935f01bc59b10ac69c SHA-256: 1aa97ff1ffe713c6412479e209e671c46c9b21d1fabbf27fd4ce07a4e2eee5e1

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded links, with one specifically pointing to a known malicious redirector. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external PDF links, suggesting a link farm or SEO poisoning attempt. The ML classifier also strongly flagged this PDF as malicious. The primary attack pattern involves luring users to malicious infrastructure via these embedded links.

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.ru/pify?keyword=anglo+dutch+treaty+1824+pdf
- http://teseg.olphlindenhurst.com/uploads/1/3/1/8/131856161/judunoveta.pdf
- http://files.parkhillbowlingclub.com/uploads/1/3/2/8/132815154/4047543.pdf
- http://files.clarerodandgunclub.com/uploads/1/3/1/6/131607522/8a48b35.pdf
- http://files.tygartmountainsports.com/uploads/1/3/1/8/131856516/bulenaj-gakiduna-xalazanew-defoka.pdf
- http://files.baragisladottir.com/uploads/1/3/2/6/132681826/futukirafol.pdf
- https://cdn.shopify.com/s/files/1/0429/5104/9370/files/98099471822.pdf
- https://cdn.shopify.com/s/files/1/0433/1631/4277/files/coaching_style_of_leadership.pdf
- https://cdn.shopify.com/s/files/1/0427/8996/1884/files/kekeguso.pdf
- https://cdn.shopify.com/s/files/1/0428/3134/7868/files/simij.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/28650507632.pdf
- https://cdn.shopify.com/s/files/1/0433/9879/1329/files/92849979310.pdf
- https://cdn.shopify.com/s/files/1/0449/8325/5198/files/bionator_ortodoncia.pdf
- https://cdn.shopify.com/s/files/1/0431/7921/2959/files/middle_between_two_dates.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/wexidemunuviviradepinitim.pdf
- https://cdn.shopify.com/s/files/1/0428/0510/0711/files/20524385140.pdf
- https://cdn.shopify.com/s/files/1/0432/2977/3982/files/merexoromumazenuva.pdf
- https://cdn.shopify.com/s/files/1/0433/7529/6670/files/wokegelufi.pdf
- https://cdn.shopify.com/s/files/1/0432/2266/3325/files/bopunavelovupo.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_off000064a6.bin` `89b7a1ed7d8132853fb86eef8380962f9cbd4066040b662fa001c9324d4db89c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64A6	5796 bytes
`font_01_sfnt_off0000786c.bin` `dd7014ee5427ff4d6acbae586379b30f91e63e9fdc970601f7b50b2e4d4c0d43`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x786C	9964 bytes

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