PDF malware analysis — malicious · 4206c8c72fafd5f8

MALICIOUS

PDF

62.5 KB Created: 2020-08-06 06:54:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 88cd66b257c60583929ba8cbcdf88122 SHA-1: 9875ac2514323372dce48c215adcd7d2907a6c0f SHA-256: 4206c8c72fafd5f81f7bf1aa6b9eea16d43739c5977312dc7c9c3d5cb71dc384

120 Risk Score

Malware Insights

MITRE ATT&CK

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

The PDF file contains a heuristic match for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to malicious infrastructure. The embedded URL https://ttraff.cc/pify?keyword=bjt+transistor+tutorial+pdf is a primary indicator of this malicious intent. Additionally, the PDF_SEO_LINK_FARM heuristic suggests a large number of outbound links, likely for SEO manipulation or to obscure the malicious redirector. The document body, though heavily obfuscated, contains text related to 'Bjt transistor tutorial pdf', reinforcing the 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.cc/pify?keyword=bjt+transistor+tutorial+pdf
- http://files.charlestonejc.org/uploads/1/3/0/7/130739099/dafaw-pepovazemerim.pdf
- http://files.environmentalspillcontrolllc.com/uploads/1/3/1/6/131606697/vowilev.pdf
- http://files.support.famhealth.com/uploads/1/3/1/1/131164425/1814940.pdf
- http://semixiwag.urbanthreadla.com/uploads/1/3/0/7/130775934/talagowezuwe.pdf
- https://cdn.shopify.com/s/files/1/0436/2010/6404/files/black_jesus_ep_1.pdf
- https://cdn.shopify.com/s/files/1/0432/8377/5643/files/loxesot.pdf
- https://cdn.shopify.com/s/files/1/0430/7219/2669/files/best_java_tutorial_for_beginners.pdf
- https://cdn.shopify.com/s/files/1/0433/7270/7990/files/rovarukixilojukidera.pdf
- https://cdn.shopify.com/s/files/1/0436/8482/3205/files/lubulelewaketu.pdf
- https://cdn.shopify.com/s/files/1/0434/3290/2823/files/shabba_ranks_a_ap_ferg.pdf
- https://cdn.shopify.com/s/files/1/0433/6418/8312/files/17198290480.pdf
- https://cdn.shopify.com/s/files/1/0429/6137/1290/files/bidoxug.pdf
- https://cdn.shopify.com/s/files/1/0430/1992/7713/files/xomabapepunuwuriko.pdf
- https://cdn.shopify.com/s/files/1/0431/3900/6632/files/30637312539.pdf
- https://cdn.shopify.com/s/files/1/0429/3797/4950/files/83659848532.pdf
- https://cdn.shopify.com/s/files/1/0434/7127/4146/files/xonip.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/
- https://cdn.shopify.com/s/files/1/0434/3290/2823/files/sh

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b815.bin` `a60755a09461cf5a013508057f22dff4c0c2c89ddc40408c5bd4e2f68bfe7fb4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB815	5160 bytes
`font_01_sfnt_off0000c9b7.bin` `396b3eb613f8fe68d833f2cee63b88c26fee148a9c289e5570559e8149ff82fa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC9B7	10352 bytes

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