PDF malware analysis — malicious · 3dc533b37d84978c

MALICIOUS

PDF

54.3 KB Created: 2020-08-25 08:03:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: a93f9952720ab037d24b562ebbdd38df SHA-1: f99e637bb0a389509711edeef094c0a6bfdb089d SHA-256: 3dc533b37d84978c1e63f03d049023f0417a7bd91c3c7f0b6f5a9456bdab0197

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of embedded links, many pointing to external PDFs hosted on various domains, which is indicative of a link farm or SEO poisoning tactic. One of the primary links directs to a known malicious redirector, ttraff.com, suggesting an attempt to lead the user to malicious content. The ML classifier also 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=bhangra+dance+music
- http://kaguwis.store.easy-editor.com/uploads/1/3/1/6/131606666/ganuzu_sajiguxomuxif_pumulujofi.pdf
- http://wikux.tifepiphany.com/uploads/1/3/1/3/131383377/279103.pdf
- http://wibevire.gillilandhcwildrags.com/uploads/1/3/0/7/130775407/lipetu_mepinu_bebisifuzegivev.pdf
- http://files.publicgardendesign.com/uploads/1/3/2/7/132740377/6570419.pdf
- http://files.biesyiczadyfci.com/uploads/1/3/1/3/131380745/xakive.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/65817182127.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rinavupomun.pdf
- https://cdn.shopify.com/s/files/1/0433/5622/5688/files/wubugetikal.pdf
- https://cdn.shopify.com/s/files/1/0428/5667/7543/files/adding_philippine_money_worksheets_for_grade_1.pdf
- https://cdn.shopify.com/s/files/1/0433/8037/5715/files/mewelazagavi.pdf
- https://cdn.shopify.com/s/files/1/0432/7931/9196/files/40370372806.pdf
- https://cdn.shopify.com/s/files/1/0431/6043/6896/files/jasoxozo.pdf
- https://cdn.shopify.com/s/files/1/0437/4924/5079/files/71935098452.pdf
- https://cdn.shopify.com/s/files/1/0433/7185/6026/files/gomuve.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 4

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00006fea.bin` `3076df2bdab189ea58e0c8a30423d05561148221a00054a316081842f3c2324e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6FEA	5372 bytes
`font_01_sfnt_off000081f5.bin` `fb39e422a9437f737f1ad1cbc13f951261dce3ccd88ec134a951ce1d26d7437d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x81F5	2672 bytes
`font_02_sfnt_off00008d55.bin` `41541958a9ffbcdac48634b554b1092ef8ab0dda21622d383b49430de7173c71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D55	11820 bytes
`font_03_sfnt_off0000b361.bin` `1202612d8e3b008fe066b12a2ce50120569e8ebc445cb9a9d075a63e379094ce`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB361	16700 bytes

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