PDF malware analysis — malicious · a8c5909be0af4b83

MALICIOUS

PDF

45.6 KB Created: 2020-08-23 06:48:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 209c0419e9eab91d4e0dc77911f1d237 SHA-1: 4139fcb795875e30615ef1338a6c990b12343b9f SHA-256: a8c5909be0af4b839abca06185b01c1e794dae7866c8382641e9d4e61d75abdc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a redirector URL, 'https://ttraff.com/pify?keyword=kshatriya%2528+1993+full+movie', which is flagged as malicious. The document also hosts a large number of external PDF links, many pointing to Shopify domains, suggesting a link farm or SEO manipulation tactic to distribute malicious content. The ML classifier strongly indicated maliciousness.

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=kshatriya%2528+1993+full+movie
- http://files.franklincountyhypnosis.com/uploads/1/3/2/8/132813998/1e70760.pdf
- http://files.bastionaudio.co.uk/uploads/1/3/0/7/130740051/7947868.pdf
- https://cdn.shopify.com/s/files/1/0436/5529/9237/files/48403504194.pdf
- https://cdn.shopify.com/s/files/1/0440/7181/3285/files/7488117932.pdf
- https://cdn.shopify.com/s/files/1/0431/6761/3087/files/pozofunozizeseme.pdf
- https://cdn.shopify.com/s/files/1/0434/6943/9141/files/tejekejekovilumo.pdf
- https://cdn.shopify.com/s/files/1/0433/1149/7366/files/process_walk_interview_sheet.pdf
- https://cdn.shopify.com/s/files/1/0434/2241/7046/files/34233162898.pdf
- https://cdn.shopify.com/s/files/1/0429/3551/7337/files/foforavivagemidamuzix.pdf
- https://cdn.shopify.com/s/files/1/0435/6079/6318/files/branson_tractor_parts.pdf
- https://cdn.shopify.com/s/files/1/0431/2052/5476/files/71029945093.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 3

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off000068c3.bin` `2e04630566701b6b726b138febbba26efc3cfcfe0f2d82bb5151f4027b112e18`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x68C3	5588 bytes
`font_01_sfnt_off00007bbe.bin` `15f609ff5fcab2644345cade5ff280bb476159cb8bb47004cd4a69e0670378ad`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7BBE	10076 bytes
`font_02_sfnt_off00009e73.bin` `c2a3fc3f8cc986542a1e85ba9bf0ee89b2c78e2a94c49d045e312c8f3a766a80`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x9E73	2836 bytes

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