PDF malware analysis — malicious · a803e7083c193b81

MALICIOUS

PDF

58.2 KB Created: 2020-08-31 02:24:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2de16c9d109a4acbb2b97baeada99631 SHA-1: 11653adc809c15ed8cbe62eac2bfcdbb5ad9e038 SHA-256: a803e7083c193b81b91ce77e5c56a40e5f0455f0d53331556b0829f203a0dc3b

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was identified as malicious due to its inclusion of a link farm pointing to known malicious redirector infrastructure. The document body, though heavily obfuscated, contains the URL https://ttraff.com/wix?keyword=penang+botanic+gardens, which is flagged as a malicious redirector. The presence of numerous external PDF links, many hosted on Shopify, further supports the link farm detection. The ML classifier also strongly indicated maliciousness.

Machine Learning

Nyx PDF Classifier malicious score 0.9990

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=penang+botanic+gardens
- https://static.usrfiles.com/ugd/345929_097c0e01386c4658ac85767a569820fe.pdf
- https://static.usrfiles.com/ugd/b8c837_7d10fabd072346dda4cf7dba52b25347.pdf
- https://static.usrfiles.com/ugd/b8c837_f8437bfbc26b424c91f8d9ba040621c6.pdf
- https://cdn.shopify.com/s/files/1/0430/2720/2205/files/37561923292.pdf
- https://cdn.shopify.com/s/files/1/0430/6649/1042/files/46618220471.pdf
- https://cdn.shopify.com/s/files/1/0428/6119/9526/files/contratos_de_alquiler_en_bolivia.pdf
- https://cdn.shopify.com/s/files/1/0437/8663/3374/files/46729667047.pdf
- https://cdn.shopify.com/s/files/1/0433/2643/9582/files/lavino.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_off00008550.bin` `6d5dace99643426e592a4518a63efb56fe5a89a737c54de6ae932b1742f2e224`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8550	4408 bytes
`font_01_sfnt_off000094d5.bin` `2100be0d0daf92ba9106f6ac7f6a5ad1fbbd0335bbb13b4256f7ad1e027d13ca`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x94D5	5216 bytes
`font_02_sfnt_off0000a689.bin` `cbe40f1f90676d0f8ac9d3705a1f14ce81a6ba94587a6c5a11a26da021483828`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA689	4460 bytes
`font_03_sfnt_off0000b64e.bin` `23c3306c82ef1064846ed08577769bcdcdc99aef4b9d0cafc12e0b38f2c6f578`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB64E	11288 bytes

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