PDF malware analysis — malicious · 48e839956d2b4a2a

MALICIOUS

PDF

47.2 KB Created: 2020-08-29 19:32:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ad9168572ecc9936aa6c974d00e824eb SHA-1: ad799421931fa221ba02c41b998f1344326d84bc SHA-256: 48e839956d2b4a2ae9e0349c598735a2efea9d1d80c6c2560651e0c0b359484c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a critical heuristic firing for a malicious redirector link pointing to ttraff.com. Additionally, it exhibits characteristics of a PDF link farm, with numerous embedded URLs designed to appear as SEO-optimized content. The ML classifier also strongly indicated maliciousness. The primary attack vector appears to be directing users to malicious infrastructure via these links.

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/wix?keyword=bhagavad+gita+book+in+marathi
- https://static.usrfiles.com/ugd/b8c837_cee4f5f484134a58a92356ca0dc9fcee.pdf
- https://static.usrfiles.com/ugd/b8c837_b80a51276c4640d8b781c73719c34f29.pdf
- https://static.usrfiles.com/ugd/837d34_0d4f3bf9811644c2b757ccc7e9ebd78e.pdf
- https://static.usrfiles.com/ugd/93c935_12d6c9270d6b4b048510b2dc9aa9b220.pdf
- https://static.usrfiles.com/ugd/b8c837_f8437bfbc26b424c91f8d9ba040621c6.pdf
- https://static.usrfiles.com/ugd/7f46b5_5ec96ab8e4684b9b9262d421c1b1b68d.pdf
- https://cdn.shopify.com/s/files/1/0431/8344/0036/files/biochemical_engineering_lecture_notes.pdf
- https://cdn.shopify.com/s/files/1/0465/2839/7470/files/dragon_ball_z_shin_budokai_download_android_apk.pdf
- https://cdn.shopify.com/s/files/1/0432/5123/7022/files/ruzifiduxepinirag.pdf
- https://cdn.shopify.com/s/files/1/0435/9671/0050/files/26065211026.pdf
- https://cdn.shopify.com/s/files/1/0431/5788/0996/files/get_google_advertising_id_android.pdf
- https://cdn.shopify.com/s/files/1/0433/6094/4296/files/9277881246.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kemulubu.pdf
- https://cdn.shopify.com/s/files/1/0430/9542/5191/files/mazilamirazamipurotuvux.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_off000053d4.bin` `363587f7a89b5f6bbbae6debcf53cd5f86208e7401f045f0b1a7927bcbe185a8`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x53D4	5012 bytes
`font_01_sfnt_off000064ab.bin` `9bfbfdb2ef4a1826c2a196005b6fa72a51d2c1a6e29847a95827019e595a11c4`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x64AB	10060 bytes
`font_02_sfnt_off00008727.bin` `ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8727	4324 bytes
`font_03_sfnt_off00009529.bin` `9d8a4be658fff49ba4bb8a13f7c6e9fc325f1171ca92e72caaa06fe0cff09b1b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9529	6944 bytes

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