PDF malware analysis — malicious · 0af2d40a13ad9ca7

MALICIOUS

PDF

40.3 KB Created: 2020-09-01 06:26:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ed147e6b472b47e51b29e04bae6fe5a4 SHA-1: 2fdae67206c5c41280a2e35d6e10e8c3dbe354f8 SHA-256: 0af2d40a13ad9ca711f227d3151704f0798a5126994bab97b2768ecb4a13cf8d

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded links that redirect to malicious infrastructure, specifically a URL designed to lure users with a search query related to software development. The ML classifier strongly indicates maliciousness. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO manipulation tactic 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.cc/pify?keyword=devexpress+report+designer+add+datasource
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0429/5137/7049/files/fijavuvawifu.pdf
- https://cdn.shopify.com/s/files/1/0440/5667/4469/files/bible_niv_free.pdf
- https://cdn.shopify.com/s/files/1/0433/5714/3199/files/wopekotexalolefupugoxas.pdf
- https://static.usrfiles.com/ugd/784815_55ad54ee6ff24f5ea427089d1576ad88.pdf
- https://static.usrfiles.com/ugd/bb13a2_d6cd8185a2ed4b77aeb9fe48090dc665.pdf
- https://static.usrfiles.com/ugd/5b604d_1634354898394a21b9c0fe53f40cddd5.pdf
- https://cdn.shopify.com/s/files/1/0435/6754/6527/files/62218633523.pdf
- https://cdn.shopify.com/s/files/1/0440/6562/0118/files/82826280546.pdf
- https://cdn.shopify.com/s/files/1/0434/5783/9254/files/94597221235.pdf
- https://cdn.shopify.com/s/files/1/0431/3651/6250/files/surah_al_kahf_download.pdf
- https://cdn.shopify.com/s/files/1/0431/4005/5208/files/57091247417.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_off00005867.bin` `988c2de18b4f72a4f10a9e30693253fbcb27577a7ada0c1017265987fa97ff5f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5867	5336 bytes
`font_01_sfnt_off00006aac.bin` `0cbb05e88221ee507a4d0001741b6a885530b78366084abc8058739fc8e73c34`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6AAC	13128 bytes

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