PDF malware analysis — malicious · af06054053e5a730

MALICIOUS

PDF

46.6 KB Created: 2020-08-01 23:02:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 2f799bdf2b18d0144d4a2917248c6fad SHA-1: 4c2d788fb31defcb8cec1a1d4395daac4542bf62 SHA-256: af06054053e5a7308496f9d3bb684af592279b9001b1ba2769430d5dbfa7abad

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=best+manual+boost+controller'. The ML classifier also strongly indicated maliciousness. The document body contains text related to the redirector URL, reinforcing the lure.

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=best+manual+boost+controller
- http://files.slcfoods.com/uploads/1/3/1/4/131437724/3682387.pdf
- http://files.mexicanvillagegf.com/uploads/1/3/1/6/131606128/9bcc394.pdf
- http://files.senorahamilton.com/uploads/1/3/1/4/131412558/0b710b45ac6.pdf
- https://cdn.shopify.com/s/files/1/0433/6009/2309/files/texedixeses.pdf
- https://cdn.shopify.com/s/files/1/0431/3314/1149/files/14068297921.pdf
- https://cdn.shopify.com/s/files/1/0433/3443/4969/files/86699386619.pdf
- https://cdn.shopify.com/s/files/1/0429/9715/3943/files/jedasevo.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/15843942414.pdf
- https://cdn.shopify.com/s/files/1/0431/5525/9546/files/97650418610.pdf
- https://cdn.shopify.com/s/files/1/0434/8982/0836/files/zesoguvawiperosaxutepimu.pdf
- https://cdn.shopify.com/s/files/1/0430/1937/0659/files/14777955181.pdf
- https://cdn.shopify.com/s/files/1/0428/4288/2215/files/wugivut.pdf
- https://cdn.shopify.com/s/files/1/0434/3955/4727/files/12639143106.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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00007b16.bin` `99356a66ed35a5c64cf52b1ced1434c86f1fc7a9f11a7c3e17e60cd517ef8b1d`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7B16	5132 bytes
`font_01_sfnt_off00008c70.bin` `84d42c978e73f3626ed06a70c52a87c0dd2f25b0b3be9ce50baeeb785e95695b`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8C70	9792 bytes

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