PDF malware analysis — malicious · 4e8cc39b333a2dbb

MALICIOUS

PDF

35.1 KB Created: 2020-08-12 21:23:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ba4bccaefc47dee18aa292f756901a34 SHA-1: a44ce6f3d13434ede95fbbf438012ba3311580f4 SHA-256: 4e8cc39b333a2dbbcb829e4564f10ccd0a7e6c884e1e82147268df01eea323cf

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.cc'. The document body, though heavily obfuscated, contains text fragments that appear to be a lure for 'Wordly wise 3000 book 6 lesson 3 pdf'. This suggests the document is designed to trick users into clicking the malicious link, likely leading to further malware download or phishing. 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=wordly+wise+3000+book+6+lesson+3+pdf
- http://mesugun.artistonabike.co.uk/uploads/1/3/1/4/131483337/4034298.pdf
- http://files.shopgrayinspired.com/uploads/1/3/2/6/132681767/668879.pdf
- http://vetam.veropest.com/uploads/1/3/0/7/130775075/f818bb84222.pdf
- http://files.cardifun.com/uploads/1/3/0/9/130969291/70bed08.pdf
- http://bibilola.hcleathergoods.com/uploads/1/3/2/8/132814930/winosaxirukazu.pdf
- https://cdn.shopify.com/s/files/1/0428/2672/7580/files/83161526497.pdf
- https://cdn.shopify.com/s/files/1/0433/0435/3956/files/addition_subtraction_word_problems.pdf
- https://cdn.shopify.com/s/files/1/0439/4418/1928/files/53702789907.pdf
- https://cdn.shopify.com/s/files/1/0432/4504/3876/files/wilowejitepagelixejim.pdf
- https://cdn.shopify.com/s/files/1/0432/2027/1264/files/kofisatovogopoki.pdf
- https://cdn.shopify.com/s/files/1/0433/9941/3910/files/90594352839.pdf
- https://cdn.shopify.com/s/files/1/0435/1819/7912/files/rozadapimutuxusoten.pdf
- https://cdn.shopify.com/s/files/1/0433/9970/8821/files/11293040421.pdf
- https://cdn.shopify.com/s/files/1/0431/4251/2802/files/rexevebekatomulijufamuw.pdf
- https://cdn.shopify.com/s/files/1/0431/1017/0786/files/factors_affecting_fetal_development.pdf
- https://cdn.shopify.com/s/files/1/0430/6858/8194/files/97455692455.pdf
- https://cdn.shopify.com/s/files/1/0434/5259/6374/files/89697892712.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_off00004a3e.bin` `67e0e750859cb458b098a91eaa3d980275d3aa1656f37395c6b370b0ab58dcc0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4A3E	5696 bytes
`font_01_sfnt_off00005dca.bin` `6ac2b4ab1bd342c7b6651955c9381eeaf9bbd1ad6ff875e838348702e521f870`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5DCA	9996 bytes

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