PDF malware analysis — malicious · 160ae21623da301d

MALICIOUS

PDF

39.1 KB Created: 2020-09-01 06:32:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 4cc02434f0d542dfceb2437893d5afcb SHA-1: 02c0ef1bb2fc4d41249e5a7eb008099001e054d5 SHA-256: 160ae21623da301d032ef6aeee31bc81d1982af38a0c802d227612c01217b8ce

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with one specifically pointing to a known malicious redirector infrastructure. The document body, though heavily obfuscated, contains text related to a 'Kindle fire 7 with alexa user guide' and the malicious URL, suggesting a lure to a phishing or scam page. The presence of a link farm further indicates an attempt to distribute malicious content.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

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.
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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.me/wix?keyword=kindle+fire+7+with+alexa+user+guide
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/850f07_580ff25fab864a27a2d9a49da4b807cd.pdf
- https://static.usrfiles.com/ugd/b8c837_5ef510d21cea40feb2e98415b686354f.pdf
- https://static.usrfiles.com/ugd/b8c837_a0f16e8a3a8f473eb81365e601c4f4f2.pdf
- https://static.usrfiles.com/ugd/b8c837_a6071401020040e89cf7e0f04e877af2.pdf
- https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
- https://cdn.shopify.com/s/files/1/0456/9143/7215/files/wepetikajixekinepowoluva.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/35031547028.pdf
- https://static.usrfiles.com/ugd/1cfe37_296fc442b8ed40468de5131d352cf8d5.pdf
- https://static.usrfiles.com/ugd/b8c837_9484169f27cb4bb9ba43388afdc33d1b.pdf
- https://static.usrfiles.com/ugd/2813e2_4d7673d017e5433285518e1506ee2184.pdf
- https://static.usrfiles.com/ugd/234f58_06d2fed27e6048e6bada7060eb66b546.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/
- http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000059a8.bin` `3140aaa23a95b65238d713cd23f41469f5727a53449c0285d7c144e63c6b137c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x59A8	5376 bytes
`font_01_sfnt_off00006c0f.bin` `f9a348a32db57def04f2dc61002082a47956744ce663c381a24e6275ca237e35`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6C0F	10544 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.