PDF malware analysis — malicious · 98b7183a05720ae5

MALICIOUS

PDF

46.5 KB Created: 2020-08-17 03:29:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 973e9a2d8b8aa796270e25ed8b5acf40 SHA-1: e3a2aebf6f8ae694d3200da4c2d41f6bbf1a6ec4 SHA-256: 98b7183a05720ae5389a2782b6630593e8d0a2149da8541fcaf1049fc0521e6e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a link that redirects to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to an 'N64 emulator ios no jailbreak' lure, suggesting a social engineering tactic. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a link farm, likely to improve search engine ranking for malicious content. The ML classifier also strongly flagged this PDF as malicious.

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=n64+emulator+ios++no+jailbreak
- http://files.metalmeltdown.com/uploads/1/3/1/4/131453276/joviloxaw.pdf
- https://cdn.shopify.com/s/files/1/0429/8909/3018/files/fudifumesura.pdf
- https://cdn.shopify.com/s/files/1/0432/2341/6987/files/dujeduxabalobiso.pdf
- https://cdn.shopify.com/s/files/1/0432/2977/3979/files/76305638514.pdf
- https://cdn.shopify.com/s/files/1/0432/3278/8648/files/lasewalurotakiz.pdf
- https://cdn.shopify.com/s/files/1/0437/4275/7029/files/mosuz.pdf
- https://cdn.shopify.com/s/files/1/0429/5085/2762/files/36715905006.pdf
- https://cdn.shopify.com/s/files/1/0432/8289/0912/files/jquery_template_html.pdf
- https://cdn.shopify.com/s/files/1/0433/7877/0076/files/anagram_words_list.pdf
- https://cdn.shopify.com/s/files/1/0434/6318/0454/files/94702957988.pdf
- https://cdn.shopify.com/s/files/1/0431/2009/9488/files/2005_ford_explorer_repair_manual.pdf
- https://cdn.shopify.com/s/files/1/0429/3050/3846/files/engineering_drawing_standards_manual.pdf
- https://cdn.shopify.com/s/files/1/0433/9014/0581/files/wod_vampire_the_masquerade.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000589c.bin` `f39582a30d1255a4e42e2b99bcfc690c5775b49a14e9b85a567215645eb52b71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x589C	5324 bytes
`font_01_sfnt_off00006aa0.bin` `1dee64feb338e2cc595d88a35b766ea8b8b199e124349708576bb4cf11bee47e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AA0	1772 bytes
`font_02_sfnt_off00007353.bin` `656fdcff2df5afee80043b125fbafca828896a190c31f987cb6c8ce7a6aa644c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7353	10712 bytes
`font_03_sfnt_off00009826.bin` `354dce64f07f3d7acdf6a04edf763950ffbfec4edcbb4bfe17b65a83544077bb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9826	16036 bytes

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