PDF malware analysis — malicious · 1da21452f30a4e25

MALICIOUS

PDF

43.7 KB Created: 2020-07-31 19:56:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 60e3329b3a6a35003475d3d7d6b9688e SHA-1: 225a328fea55818ceddab5f91ed276fa036b98ac SHA-256: 1da21452f30a4e25233de64f4c47d4ba5452b3715a61782e5f1e29b27e8d4ad7

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 benign Shopify URLs, but one critical link directs to a known malicious redirector. This suggests a link farm or SEO poisoning tactic designed to lure victims. The document body, though heavily garbled, contains the URL https://ttraff.cc/pify?keyword=discrete+mathematics+5th+edition+pdf, which is flagged as a malicious redirector, indicating the primary intent is to lead users to malicious content.

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.cc/pify?keyword=discrete+mathematics+5th+edition+pdf
- http://files.uhsguidance.com/uploads/1/3/0/7/130740368/womag.pdf
- http://files.thelawnandgardengeek.com/uploads/1/3/2/7/132712623/segitezu_malolizoki.pdf
- http://files.allegrezzasingers.com/uploads/1/3/1/6/131606486/digipirogupavo-xuwod-rajiradetoreduj-jufafubogikeli.pdf
- http://files.wildlifeecology.org/uploads/1/3/0/8/130814594/9952308.pdf
- http://files.oregoncma.org/uploads/1/3/0/8/130813645/1364540.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/526428265.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nemubowakupupoda.pdf
- https://cdn.shopify.com/s/files/1/0430/9054/2743/files/sufavizepoxujiravoz.pdf
- https://cdn.shopify.com/s/files/1/0427/9166/5830/files/37285266122.pdf
- https://cdn.shopify.com/s/files/1/0431/0990/8637/files/tugenewewasu.pdf
- https://cdn.shopify.com/s/files/1/0430/5597/2501/files/kesaxivoriwitejejujuworo.pdf
- https://cdn.shopify.com/s/files/1/0431/7980/2782/files/zezulubewafozito.pdf
- https://cdn.shopify.com/s/files/1/0430/0413/3525/files/kilukugusuwafewolodupepab.pdf
- https://cdn.shopify.com/s/files/1/0429/6949/7753/files/sevimased.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99231100330.pdf
- https://cdn.shopify.com/s/files/1/0432/8990/3264/files/68895366220.pdf
- https://cdn.shopify.com/s/files/1/0437/0441/8455/files/vubaju.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_off00006bee.bin` `af39a04726e2548a496d95fb2ed6050c67d7e97ce46ed1cd639917b32737e3bb`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6BEE	5488 bytes
`font_01_sfnt_off00007e74.bin` `44d6a37c70faacd7efe84b6891ebfabce34cd55646180991929069053b556ea6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E74	10488 bytes

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