PDF malware analysis — malicious · 36ed9b15b628d7df

MALICIOUS

PDF

40.9 KB Created: 2020-08-09 10:11:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: bbc2e8e04986a690c50b96f7f3614380 SHA-1: daf4f94105948859ffdcaed0d9300afea3ae7c62 SHA-256: 36ed9b15b628d7df1cc5b3a4631fb1472c55563ba94afb098042bc3ee6922742

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link farm designed to appear as legitimate downloads for technical books, but it redirects to a malicious URL. The primary malicious URL is https://ttraff.cc/pify?keyword=architectural+drafting+and+design+6th+edition+pdf+free+download, which is likely used to distribute further malware. The document body, though heavily obfuscated, contains references to this malicious URL and other benign-looking Shopify links, reinforcing the lure.

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.cc/pify?keyword=architectural+drafting+and+design+6th+edition+pdf+free+download
- http://files.gilchristwhatnot.com/uploads/1/3/1/8/131856991/wepesebenemitaf.pdf
- http://files.kayleepullin.com/uploads/1/3/2/6/132681307/gomuwiguferefi_virutakufe.pdf
- http://files.leadingmenfiberarts.com/uploads/1/3/1/4/131438437/biserovumelugov.pdf
- https://cdn.shopify.com/s/files/1/0449/8512/2984/files/hawaii_g_45_form.pdf
- https://cdn.shopify.com/s/files/1/0434/9699/7030/files/ti_83_manuals.pdf
- https://cdn.shopify.com/s/files/1/0431/1947/6896/files/kurifojafowo.pdf
- https://cdn.shopify.com/s/files/1/0437/9800/3874/files/namekoritatarotogesososuw.pdf
- https://cdn.shopify.com/s/files/1/0430/3683/5993/files/call_me_a_spacemam.pdf
- https://cdn.shopify.com/s/files/1/0431/6617/1293/files/91749429277.pdf
- https://cdn.shopify.com/s/files/1/0432/7663/2214/files/lenijolexovitolixawat.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sujaxitedidubabupopivup.pdf
- https://cdn.shopify.com/s/files/1/0431/1531/5351/files/xisimulisudo.pdf
- https://cdn.shopify.com/s/files/1/0429/4744/4899/files/84652027820.pdf
- https://cdn.shopify.com/s/files/1/0427/9812/1119/files/jawulowesigupiwar.pdf
- https://cdn.shopify.com/s/files/1/0430/1013/0073/files/todoxemovenemobiva.pdf
- https://cdn.shopify.com/s/files/1/0431/5316/2389/files/25439405382.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_off000060e5.bin` `fad7fdf140f8d33e85453f593a62725f3a7d8bff50f400e7a38394d73f1810d6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x60E5	5652 bytes
`font_01_sfnt_off00007429.bin` `f16fea6c11bcfe4bf65bd75dfb646a489f1471f46ab4cb7eb1f16c9a691db65c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7429	9956 bytes

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