PDF malware analysis — malicious · e0165e4b2284038f

MALICIOUS

PDF

45.8 KB Created: 2020-08-02 11:32:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bdf9f91fa29d0886c987622c26523715 SHA-1: ee5663c90951725997ce692ffd97f461e2a0ff1b SHA-256: e0165e4b2284038fddc51f4c54f36a48760cf43c6abee520eb342c2f3399784e

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass of external links, with a critical heuristic firing for a malicious redirector. The primary malicious URL identified is https://ttraff.cc/pify?keyword=logarithmic+scale+matlab. The document body, though heavily obfuscated, also contains this URL, suggesting an attempt to lure users to malicious content. No scripts were extracted, but the PDF structure and link farm indicate a phishing or redirection attack.

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=logarithmic+scale+matlab
- http://files.gittco.com/uploads/1/3/1/6/131606631/bewazewodixek-lanova-jekaxawotum.pdf
- http://files.chilhowiechurch.com/uploads/1/3/1/4/131438260/pazavererin-ritajumi-makemekeba-kudedapevi.pdf
- http://files.highschoolmathlive.com/uploads/1/3/0/7/130739275/5056819.pdf
- http://files.asfiltermedia.com/uploads/1/3/2/6/132682868/jajojave.pdf
- http://files.barbarasuebrodie.com/uploads/1/3/1/0/131069968/01c749e3f751a.pdf
- https://cdn.shopify.com/s/files/1/0429/9191/1066/files/55463243501.pdf
- https://cdn.shopify.com/s/files/1/0431/7052/9436/files/2501078815.pdf
- https://cdn.shopify.com/s/files/1/0435/9503/8877/files/38983296950.pdf
- https://cdn.shopify.com/s/files/1/0437/2430/8630/files/lezarusozewebedafokiviti.pdf
- https://cdn.shopify.com/s/files/1/0430/3713/0914/files/kifijobatapowupokakok.pdf
- https://cdn.shopify.com/s/files/1/0429/2578/5255/files/fegipewijikoda.pdf
- https://cdn.shopify.com/s/files/1/0436/4002/9344/files/1402677577.pdf
- https://cdn.shopify.com/s/files/1/0434/7261/7637/files/xomebigosojesixe.pdf
- https://cdn.shopify.com/s/files/1/0427/9166/5830/files/19949931640.pdf
- https://cdn.shopify.com/s/files/1/0429/7618/2426/files/68993893431.pdf
- https://cdn.shopify.com/s/files/1/0431/6849/7823/files/23337276698.pdf
- https://cdn.shopify.com/s/files/1/0430/8742/9785/files/jitodubufoneminaze.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_off00007520.bin` `29ac4ca8f092d2ed51625721206b666bc0896775b7c3372af2fa6fadb714c19c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7520	5292 bytes
`font_01_sfnt_off000086fc.bin` `12d6da5f5bf62b76c4b8a58fd72d5b04d7f7d48b78c454c73ab1dd1e6109fc8a`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x86FC	10408 bytes

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