PDF malware analysis — malicious · 92b390769b337e69

MALICIOUS

PDF

45.2 KB Created: 2020-08-03 08:57:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 99dbeae74137f8156c66d25301abcf9d SHA-1: 7822ba471c6d7eb9de4250bc9542237903bfce68 SHA-256: 92b390769b337e691396fa865325c54d177b77151a5eaa3c4a468b8ad59faa5a

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector. The document body, though heavily obfuscated, contains text suggesting it is a 'Delonghi espresso machine manual', which is likely a lure. The primary malicious URL identified is https://ttraff.cc/pify?keyword=delonghi+espresso+machine+manual, which is designed to redirect users to further 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.cc/pify?keyword=delonghi+espresso+machine+manual
- http://nexuporus.tylerhampong.com/uploads/1/3/2/8/132814930/330381.pdf
- http://files.riverstonegallery.net/uploads/1/3/1/8/131856121/7624272.pdf
- http://files.smartdecorandmore.com/uploads/1/3/1/4/131454355/tuvajidezepaxadi.pdf
- https://cdn.shopify.com/s/files/1/0437/0078/1208/files/96902549151.pdf
- https://cdn.shopify.com/s/files/1/0434/5459/5225/files/sowosix.pdf
- https://cdn.shopify.com/s/files/1/0430/9506/4733/files/gixuw.pdf
- https://cdn.shopify.com/s/files/1/0433/1801/8216/files/55564309750.pdf
- https://cdn.shopify.com/s/files/1/0431/8353/8331/files/43770861095.pdf
- https://cdn.shopify.com/s/files/1/0431/1220/2389/files/wolet.pdf
- https://cdn.shopify.com/s/files/1/0429/2270/5063/files/60926896945.pdf
- https://cdn.shopify.com/s/files/1/0435/2675/0357/files/lol_esports_standings.pdf
- https://cdn.shopify.com/s/files/1/0432/0549/2904/files/kedasufarozafedakatobew.pdf
- https://cdn.shopify.com/s/files/1/0440/5464/2853/files/70159281186.pdf
- https://cdn.shopify.com/s/files/1/0435/4319/9898/files/raseruvozuve.pdf
- https://cdn.shopify.com/s/files/1/0430/9565/4554/files/pilenixepalidodude.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_off000064b4.bin` `66fe374a8297e3965d85a661c2d8cbceeba19559e725ec585bb8f1dd1c529125`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64B4	5148 bytes
`font_01_sfnt_off00007606.bin` `785fd7823f110ce9211c5af5052f8ab4799d38dc0c29057b5ff551226fff9064`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7606	10516 bytes
`font_02_sfnt_off000099dd.bin` `0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x99DD	4324 bytes

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