PDF malware analysis — malicious · cb319b2b39440bee

MALICIOUS

PDF

49.4 KB Created: 2020-07-30 17:28:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 54938f32fa26f6b8b281987cb6eb605e SHA-1: 45f9ed6e25e9c6351f9fc4812ff2df677935a860 SHA-256: cb319b2b39440beee0b18e64b4e5069d7ca269f2b643f89a2ba3408043070f78

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com, and one critical link redirects to a known malicious domain (ttraff.com). This suggests a phishing or redirection attack aimed at leading users to malicious content. The document body, though heavily obfuscated, appears to contain keywords related to educational worksheets, likely a lure.

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=algebra+addition+and+subtraction+worksheets+pdf
- http://files.nalinikrishnankutty.com/uploads/1/3/0/8/130874128/mewajuluxojuvafox.pdf
- http://files.birthassistanteducation.com/uploads/1/3/2/7/132710569/5862639.pdf
- http://files.lbcevansville.com/uploads/1/3/2/8/132815791/lulat-xakoxudeva-mubebisutesedar-wunaluz.pdf
- http://files.birthassistanteducat
- https://cdn.shopify.com/s/files/1/0432/8783/8886/files/dunebejoxanexotupigobolar.pdf
- https://cdn.shopify.com/s/files/1/0432/3124/8541/files/woxepatevupegede.pdf
- https://cdn.shopify.com/s/files/1/0428/7237/3414/files/76800940994.pdf
- https://cdn.shopify.com/s/files/1/0428/1732/3175/files/winibitof.pdf
- https://cdn.shopify.com/s/files/1/0428/5900/4070/files/mesivugasumasazak.pdf
- https://cdn.shopify.com/s/files/1/0430/9752/2329/files/mukodonuwafamojoxupujivu.pdf
- https://cdn.shopify.com/s/files/1/0429/2821/0073/files/54335188455.pdf
- https://cdn.shopify.com/s/files/1/0430/9945/5642/files/nalipisare.pdf
- https://cdn.shopify.com/s/files/1/0429/1638/0838/files/sofudezune.pdf
- https://cdn.shopify.com/s/files/1/0435/6079/6318/files/vugimezonezufem.pdf
- https://cdn.shopify.com/s/files/1/0432/8318/5832/files/gutewokam.pdf
- https://cdn.shopify.com/s/files/1/0430/1750/2869/files/10172571358.pdf
- https://cdn.shopify.com/s/files/1/0432/2469/4942/files/taxubofuvi.pdf
- https://cdn.shopify.com/s/files/1/0428/1548/8163/files/watis.pdf
- https://cdn.shopify.com/s/files/1/0430/9018/2304/files/gitomaj.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_off00008147.bin` `6eca450e2c823a318a91ef07d7d005ccc099d9a3becd0d24ad4135817a87762e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8147	5584 bytes
`font_01_sfnt_off00009448.bin` `498284f4548f533804effe3a40fd473dc6037fc6b1376cc2b0774cdba1b11af0`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9448	10308 bytes

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