PDF malware analysis — malicious · b7e8c77a521d5a9d

MALICIOUS

PDF

41.6 KB Created: 2020-08-18 23:27:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ad5cb02d18ce4a386f6cff0c049fc2cf SHA-1: a5f963f026635f1ea2d5d6e29d1774762063b39c SHA-256: b7e8c77a521d5a9da0cca140c3ef126112cb40235b0dd86c34cd3fee8519ce34

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 'https://ttraff.com/pify?keyword=incident+report+writing+training+video'. This URL is embedded within the document body, disguised as training material. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly supports the malicious verdict. No scripts were extracted, but the primary attack vector appears to be social engineering via a deceptive link.

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=incident+report+writing+training+video
- http://febiro.glamourcosmeticsofficial.com/uploads/1/3/1/3/131382486/jogibemasik.pdf
- http://files.learntosailswf.org/uploads/1/3/0/7/130775825/3392922.pdf
- http://lafusa.jillianmichaelsvoice.com/uploads/1/3/0/8/130874123/supavoneguzuxad.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lejozusuxawunulimedobina.pdf
- https://cdn.shopify.com/s/files/1/0436/5670/8254/files/84363747476.pdf
- https://cdn.shopify.com/s/files/1/0429/7375/7603/files/adobe_premiere_color_presets_free.pdf
- https://cdn.shopify.com/s/files/1/0452/5893/2381/files/pokesonuno.pdf
- https://cdn.shopify.com/s/files/1/0435/3998/8648/files/menijez.pdf
- https://cdn.shopify.com/s/files/1/0430/8120/3861/files/43376415034.pdf
- https://cdn.shopify.com/s/files/1/0439/4732/7646/files/vanononezilibotugajilexe.pdf
- https://cdn.shopify.com/s/files/1/0428/5438/3782/files/fipevinuxusozusilutu.pdf
- https://cdn.shopify.com/s/files/1/0430/8451/3440/files/30145805929.pdf
- https://cdn.shopify.com/s/files/1/0440/2426/6917/files/aprilia_srv_850_service_manual.pdf
- https://cdn.shopify.com/s/files/1/0433/4980/3166/files/66189986469.pdf
- https://cdn.shopify.com/s/files/1/0429/8611/1137/files/vixira.pdf
- https://cdn.shopify.com/s/files/1/0430/5957/6986/files/robijo.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_off00006577.bin` `e837e3ce325ddb84f141153806c1605dc3444cea43c71c1af2b172029e09df79`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6577	5120 bytes
`font_01_sfnt_off00007700.bin` `7a33dc83b5429f3c565fff056cdb5468fc28b99857fe47dfc5efa078ecd8a0e4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7700	10060 bytes

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