PDF malware analysis — malicious · 5217e6f79be017a8

MALICIOUS

PDF

47.5 KB Created: 2020-08-31 07:52:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 3504c1dddda655aa9e4f3f6ca641b3c9 SHA-1: f45db550cf0beb06041f0e561944be03ecf96356 SHA-256: 5217e6f79be017a8a6c08d344b07be7db468d44f5a9991c9ad2aaa152b72c6e6

152 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded links, with one specifically pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/wix?keyword=dimensions+of+conflict+handling+intentions', suggesting a lure to a malicious site. The ML classifier also 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/wix?keyword=dimensions+of+conflict+handling+intentions
- https://static.usrfiles.com/ugd/8ba634_cb0ae857eeeb4a82b72721a34dca5a14.pdf
- https://static.usrfiles.com/ugd/7598fa_48c1d06c3f044e1facc61f4c93b2d42d.pdf
- https://static.usrfiles.com/ugd/b8c837_98c42a7bebad40b3bb10e7c6e3deba65.pdf
- https://static.usrfiles.com/ugd/0047a4_1ddc32a8f7fa4d029f5346c0e965a1f2.pdf
- https://static.usrfiles.com/ugd/003b86_893e1abc82ac4c6c9163fd050549e33e.pdf
- https://static.usrfiles.com/ugd/d43733_71891c4de9d54b178d713dd6751d6100.pdf
- https://cdn.shopify.com/s/files/1/0434/9463/7734/files/vopetusokowi.pdf
- https://cdn.shopify.com/s/files/1/0432/2259/7796/files/binax.pdf
- https://cdn.shopify.com/s/files/1/0430/3595/1257/files/94858621223.pdf
- https://cdn.shopify.com/s/files/1/0430/8844/5591/files/39978791456.pdf
- https://cdn.shopify.com/s/files/1/0428/6113/3990/files/xepiwebatad.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_off00006f59.bin` `353e1842aaa44663e04fb8cf5c8f795c405ae943e4605b35975aed6f47eb4fd9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x6F59	5124 bytes
`font_01_sfnt_off00008098.bin` `0ae76437b6e6946c66d913410c2baecab6f132ee13bfc962679bb32f89d982b6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8098	10076 bytes
`font_02_sfnt_off0000a312.bin` `7f6049e5011acf0e8581793f2bc2bb947aac2929fdb77abc318b2a6155c1ef71`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xA312	4324 bytes

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