PDF malware analysis — malicious · 71cc1a999f8cb576

MALICIOUS

PDF

51.6 KB Created: 2020-08-31 12:45:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: fb849138777a0254923cd4a5382096dc SHA-1: d5302ce04584138f685c8941cee0737be72db65f SHA-256: 71cc1a999f8cb576caaec4caeb41fd9213407135b805c651bbdf7222c4df640b

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a significant number of embedded links, with at least one identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that points to a known malicious redirector. This suggests the primary purpose is to lure users to malicious sites, likely for phishing or malware distribution.

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.com/wix?keyword=taking+charge+of+anger
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://static.usrfiles.com/ugd/455f95_096d578618c0406e874f15f3763ae318.pdf
- https://static.usrfiles.com/ugd/52b593_7dbc7e3d4b1840989cfe8c62e3be8977.pdf
- https://static.usrfiles.com/ugd/b8c837_57da1a70ffb54bcdb5b94610ada5d0ce.pdf
- https://static.usrfiles.com/ugd/33a16d_d2bb32370c6e4689b3413c5405228b77.pdf
- https://static.usrfiles.com/ugd/4479ed_ccdae5fddfd74087a6a334d4843f4b6e.pdf
- https://static.usrfiles.com/ugd/b8c837_2ddfde0714584fd3b4005e5d3d313716.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/48675385277.pdf
- https://cdn.shopify.com/s/files/1/0431/7632/9373/files/luxuzufef.pdf
- https://cdn.shopify.com/s/files/1/0428/6195/3191/files/61979879321.pdf
- https://cdn.shopify.com/s/files/1/0431/2802/9345/files/74436114954.pdf
- https://cdn.shopify.com/s/files/1/0439/5014/5704/files/podafa.pdf
- https://cdn.shopify.com/s/files/1/0430/8389/0850/files/kofos.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_off00008dce.bin` `29f7bad2181fd052f5ef67439ea84e58f90ea68faca955a77ea3ac80394131bf`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8DCE	4944 bytes
`font_01_sfnt_off00009ea3.bin` `0007de8c55e3d3a8e960986a1054921c82ec0f9ee3053184e6f3a49e1de957d5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9EA3	10336 bytes

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