PDF malware analysis — malicious · 0748d4e752130eb3

MALICIOUS

PDF

38.6 KB Created: 2020-08-25 02:16:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 1bd25c3f080dca4fd31676b8015641da SHA-1: 4df1975c61f80f8d948aa8ac3a410d1ad9d7b6f3 SHA-256: 0748d4e752130eb3645a3573023f1ea1b550fd90f56b9d4398ebe2dbf06637f6

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a link farm and a primary malicious redirector URL, suggesting it is designed to lead users to malicious content. The embedded document body text, though garbled, contains the primary malicious URL and a plausible lure related to "Beyond compare command line report". The ML classifier strongly indicated maliciousness, and the PDF structure itself points to malicious redirector usage.

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/pify?keyword=beyond+compare+command+line+report
- http://nemezigoz.sghomeupgrade.com/uploads/1/3/1/3/131381706/4642990.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://cdn.shopify.com/s/files/1/0437/8702/6590/files/84560214852.pdf
- https://cdn.shopify.com/s/files/1/0439/6548/1118/files/amadeus_system.pdf
- https://cdn.shopify.com/s/files/1/0434/8523/3302/files/slow_carb_diet_food_list.pdf
- https://cdn.shopify.com/s/files/1/0437/0812/1242/files/20539237769.pdf
- https://cdn.shopify.com/s/files/1/0432/8531/5744/files/19176274935.pdf
- https://cdn.shopify.com/s/files/1/0435/2229/3920/files/brag_the_art_of_tooting.pdf
- https://cdn.shopify.com/s/files/1/0427/9166/5830/files/85383389739.pdf
- https://cdn.shopify.com/s/files/1/0440/1886/0190/files/75617566319.pdf
- https://cdn.shopify.com/s/files/1/0434/2356/3925/files/jesudefedapafanaxaj.pdf
- https://cdn.shopify.com/s/files/1/0432/9707/9460/files/14161343924.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_off00005807.bin` `ee6caeae08db6be97f32a015b7e455a639c48e5efbebc42c46914ac7c723b293`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5807	5192 bytes
`font_01_sfnt_off00006996.bin` `f21d153814f49ff15aaee52d4eedbb3e65e8ac453a12ce78c6ef1c68be9c2aa5`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6996	10628 bytes

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