PDF malware analysis — malicious · d523c1ece930d8d3

MALICIOUS

PDF

50.5 KB Created: 2020-08-07 18:52:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 524c9e31122187bca4ac676b1ff69527 SHA-1: 23b625ae3a484432c06bceecbd42b48266d44112 SHA-256: d523c1ece930d8d33842d570148ffed4a02bedd8cfeb1d5f4be0e230fe398921

160 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a lure for a 'big data tutorial pdf' which, upon clicking, redirects to a malicious URL (ttraff.com). This is further supported by heuristics indicating a malicious redirector link and a link farm designed for SEO manipulation. The document also explicitly tells the user to install a browser extension or update, a common social-engineering tactic to facilitate malware installation or credential theft.

Heuristics 4

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.
Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE

Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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=big+data+tutorial+pdf
- http://files.nynaranon.org/uploads/1/3/1/3/131380944/vubaferukaneluvek.pdf
- http://zanitav.geurtvanrennes.com/uploads/1/3/2/6/132682787/puvarimilib.pdf
- http://files.silverstreetlutheranchurch.com/uploads/1/3/1/4/131437576/9591de4f.pdf
- http://files.mstravelexec.com/uploads/1/3/1/4/131452922/vozapobolutevas.pdf
- https://cdn.shopify.com/s/files/1/0429/9259/9193/files/xunavof.pdf
- https://cdn.shopify.com/s/files/1/0431/3110/9538/files/zaxolamod.pdf
- https://cdn.shopify.com/s/files/1/0434/3631/0693/files/89211993105.pdf
- https://cdn.shopify.com/s/files/1/0431/5539/0630/files/jedizogidozijevag.pdf
- https://cdn.shopify.com/s/files/1/0430/5348/2138/files/89288358814.pdf
- https://cdn.shopify.com/s/files/1/0429/4072/7463/files/cavatina_duet.pdf
- https://cdn.shopify.com/s/files/1/0430/6970/2306/files/97000530853.pdf
- https://cdn.shopify.com/s/files/1/0439/0669/5320/files/97602188116.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/mulobovapu.pdf
- https://cdn.shopify.com/s/files/1/0428/6211/7020/files/mirc_for_mac.pdf
- https://cdn.shopify.com/s/files/1/0434/4417/5013/files/84974570277.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_off0000879b.bin` `342f5d328f62438161369446160a0933e63737f1eb40895a48915a29194a7fb5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x879B	5080 bytes
`font_01_sfnt_off000098fb.bin` `ad6a94e3428fa98c40d0fa8657690a65d356133e39034b2e086d562a5542aae4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x98FB	10684 bytes

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