PDF malware analysis — malicious · c80030ab5acf6783

MALICIOUS

PDF

37.4 KB Created: 2020-08-01 08:41:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: aff5bf2b724d1715f99513abc08744a9 SHA-1: d0e892978ba72d5de7404efae058aa45616e7ef1 SHA-256: c80030ab5acf6783da2e4d4ec1188dc8739db7fad4b6ac05b931b5028da92be6

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector link. The primary malicious URL identified is https://ttraff.com/pify?keyword=probability+and+statistics+devore+solutions+pdf, which likely serves as a gateway to further malicious content. The document body, though heavily obfuscated, contains references to the same URL, reinforcing its role in the attack. No scripts were extracted, but the PDF structure itself is weaponized to deliver malicious links.

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=probability+and+statistics+devore+solutions+pdf
- http://files.jkdesigncompany.com/uploads/1/3/0/8/130814594/jabewiwewipojibasa.pdf
- http://files.speakeasyleather.com/uploads/1/3/1/0/131070611/1018784.pdf
- http://files.thespringerstudio.com/uploads/1/3/2/7/132740606/7363297.pdf
- http://files.elaineraydesigns.com/uploads/1/3/1/4/131454024/gumorolim_lemiwemog.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/medade.pdf
- https://cdn.shopify.com/s/files/1/0434/1891/0876/files/git_update_remote_branch.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/texirid.pdf
- https://cdn.shopify.com/s/files/1/0436/7689/3334/files/3471-_10000_numbers.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/tekutuni.pdf
- https://cdn.shopify.com/s/files/1/0431/3494/3389/files/lean_on_major_lazer_lyrics.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/2934473971.pdf
- https://cdn.shopify.com/s/files/1/0432/6257/4750/files/taworadamef.pdf
- https://cdn.shopify.com/s/files/1/0430/3729/4754/files/10273532643.pdf
- https://cdn.shopify.com/s/files/1/0431/5162/2306/files/72666114909.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_off0000467a.bin` `803f25586a43cd140c3a2e590a2b60433ee9e47badf43747a190840c0f5a941c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x467A	5336 bytes
`font_01_sfnt_off000058a9.bin` `8247b00a6419581108141a15975739ff365e0f6b9bb013b87e4399bd23cf97bc`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x58A9	9912 bytes
`font_02_sfnt_off00007a91.bin` `1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7A91	4324 bytes

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