PDF malware analysis — malicious · e6be160b4c210143

MALICIOUS

PDF

48.1 KB Created: 2020-08-07 15:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9b0a7926720eeb4700202f9e34feecc5 SHA-1: 905eea1fb97bc98bed0fe48880829bbd622bf3b4 SHA-256: e6be160b4c2101435968b1c0d5f6ce6b11b2524baf7247eb7c9d8858c1a2d1fb

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a heuristic firing for a malicious redirector link, pointing to ttraff.com. The document body, though heavily obfuscated, contains the same URL and text related to academic content, suggesting a lure. The PDF also contains a large number of external links, many pointing to Shopify domains, which is characteristic of SEO link farms used to disguise malicious activity. 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=definition+of+scientific+management+theory+pdf
- http://files.mthomesandland.com/uploads/1/3/2/6/132681264/3495588.pdf
- http://files.watervlietpubliclibrary.org/uploads/1/3/1/3/131381021/1659827.pdf
- http://files.yallabar.com/uploads/1/3/0/7/130775171/4606fc41.pdf
- http://files.libertylifeyoga.com/uploads/1/3/1/3/131382395/783a021.pdf
- https://cdn.shopify.com/s/files/1/0435/5935/4517/files/chemistry_notes_class_12th.pdf
- https://cdn.shopify.com/s/files/1/0434/9480/1568/files/24952996254.pdf
- https://cdn.shopify.com/s/files/1/0435/8812/4830/files/35052385119.pdf
- https://cdn.shopify.com/s/files/1/0429/9476/1877/files/penufosi.pdf
- https://cdn.shopify.com/s/files/1/0428/1594/6911/files/dimizafebumujojudon.pdf
- https://cdn.shopify.com/s/files/1/0432/4638/7362/files/49286752114.pdf
- https://cdn.shopify.com/s/files/1/0434/5082/6919/files/xiwikawevovibitasamoj.pdf
- https://cdn.shopify.com/s/files/1/0433/0605/7888/files/vazekufidibipufikimax.pdf
- https://cdn.shopify.com/s/files/1/0432/6798/1476/files/28227891880.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/ziwodukujaluladiludu.pdf
- https://cdn.shopify.com/s/files/1/0428/4101/4438/files/jinodom.pdf
- https://cdn.shopify.com/s/files/1/0438/9135/9899/files/54641321628.pdf
- https://cdn.shopify.com/s/files/1/0431/7341/3028/files/80638358757.pdf
- https://cdn.shopify.com/s/files/1/0432/8865/8078/files/362421075.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_off00007ec4.bin` `e87282dcd8c4bd26e4ca92860bd2826fa2af1f4113a90a9ce26596180a53b559`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7EC4	5636 bytes
`font_01_sfnt_off000091d2.bin` `cb6398d91e639cd721f8b7d5fe9199bc94ea3af1f434e6810dd6abba9ad9cd33`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x91D2	9824 bytes

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