PDF malware analysis — malicious · 898ff302fd7bd738

MALICIOUS

PDF

106.8 KB Created: 2020-08-06 21:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c032a3027e70c84365cb2416a422ca30 SHA-1: e6c61804d5cb2f6a0e7d86d5c656ca01dcd1e89d SHA-256: 898ff302fd7bd738919936c6bd376338d2d2f554a96ecf9701d81e5fdf13aacf

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains embedded links, with one specifically pointing to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains text suggesting it is disguised as a political party program to entice clicks. The presence of numerous external PDF links, many hosted on Shopify, further indicates a link farm or SEO poisoning tactic to increase visibility and potential clicks on malicious URLs. The ML classifier 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=socialdemokraterna+partiprogram+pdf
- http://files.vjrelectricalcontractor.com/uploads/1/3/1/4/131454345/8035923.pdf
- http://lidires.v6-classic-modifieds.co.uk/uploads/1/3/1/3/131384281/5266275.pdf
- http://xopejo.maapparel.com/uploads/1/3/1/6/131637649/4958210.pdf
- http://files.authorshirts.com/uploads/1/3/1/3/131378852/gasumepotuju.pdf
- https://cdn.shopify.com/s/files/1/0428/9137/8854/files/70903890381.pdf
- https://cdn.shopify.com/s/files/1/0437/1228/2789/files/64390995073.pdf
- https://cdn.shopify.com/s/files/1/0434/8834/6262/files/25331565575.pdf
- https://cdn.shopify.com/s/files/1/0428/1312/8863/files/bjt_transistor_basics.pdf
- https://cdn.shopify.com/s/files/1/0437/5920/6561/files/voxupotodigibof.pdf
- https://cdn.shopify.com/s/files/1/0437/1080/8216/files/72677594713.pdf
- https://cdn.shopify.com/s/files/1/0432/4704/2715/files/purugefawebizus.pdf
- https://cdn.shopify.com/s/files/1/0429/8774/9525/files/84704534285.pdf
- https://cdn.shopify.com/s/files/1/0431/1390/6333/files/ferew.pdf
- https://cdn.shopify.com/s/files/1/0433/1926/3397/files/nigodutojibagig.pdf
- https://cdn.shopify.com/s/files/1/0435/3854/6840/files/zilexuvujujimixabofe.pdf
- https://cdn.shopify.com/s/files/1/0431/5522/6778/files/jesisejaporakosisisozegon.pdf
- https://cdn.shopify.com/s/files/1/0431/5525/9546/files/streamline_english_4.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_off00016911.bin` `2de822fa60bba57e0fa2626915112e3013c338e6c87fd69595a8646051daaeb3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x16911	5464 bytes
`font_01_sfnt_off00017b98.bin` `afa3e80f8164ad3d5c2ccef9579728688c5ccd465e1259466f0cc900774dc62d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x17B98	10108 bytes

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