PDF malware analysis — malicious · 90a515581f02df20

MALICIOUS

PDF

57.1 KB Created: 2020-07-19 16:21:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 9fdafa4ab7b0c73a2fa8959ccebd8c84 SHA-1: ba1212e9204291ae2dc52203f4d7906b2985f5e7 SHA-256: 90a515581f02df20f530a7224596cd10b71bd551afe8f805868bc8ff2f23e160

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple critical heuristics for containing malicious redirector links and a large link farm. The primary malicious URL identified is ttraff.com, which is known for redirecting to malicious content. The document body itself is heavily obfuscated and appears to be junk data, suggesting the malicious intent is solely within the embedded 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=androids+dream+of+electric+sheep+characters
- http://files.villagoband.com/uploads/1/3/0/9/130969489/8353608.pdf
- http://files.cgpto.org/uploads/1/3/1/8/131871963/pulivuj.pdf
- http://files.volkerspatchcollection.com/uploads/1/3/1/3/131379700/a55d09d51475.pdf
- https://tijiwozaros.files.wordpr
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/birizakidunupujudexi.pdf
- https://cdn.shopify.com/s/files/1/0427/7328/2983/files/deporeziteludipilovo.pdf
- https://cdn.shopify.com/s/files/1/0430/0485/4426/files/47268622807.pdf
- https://tijiwozaros.files.wordpress.com/2020/07/67583587118.pdf
- https://julabifefo633366968.files.wordpress.com/2020/07/bafipobiviputedeguloro.pdf
- https://jupurugasu.files.wordpress.com/2020/06/7156432384.pdf
- https://lisesef.files.wordpress.com/2020/07/reluvatokinogom.pdf
- https://loxijesuvoti.files.wordpress.com/2020/06/xuzotamofubuwuf.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zutazalurofesavasa.pdf
- https://cdn.shopify.com/s/files/1/0429/6297/6921/files/95043010794.pdf
- https://cdn.shopify.com/s/files/1/0432/6116/5723/files/43790546598.pdf
- https://cdn.shopify.com/s/files/1/0430/7543/6698/files/97880075500.pdf
- https://cdn.shopify.com/s/files/1/0433/4537/9478/files/46664884730.pdf
- https://cdn.shopify.com/s/files/1/0432/3573/7764/files/90459191756.pdf
- https://cdn.shopify.com/s/files/1/0433/8506/1541/files/25510445294.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_off0000a1b9.bin` `bb279ad8de104312b1d6d76a6caaaf71d9e0407d8046612624847bb10d75a3f1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA1B9	5172 bytes
`font_01_sfnt_off0000b317.bin` `1bfbea9dcb0c7f7e1aa8711d49431acfb13dba20bf451f21c5caa79d0ffadd95`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB317	10472 bytes

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