PDF malware analysis — malicious · 502d49199952aad6

MALICIOUS

PDF

65.6 KB Created: 2020-07-31 22:09:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: c3ed800d81686007e7daf87356141097 SHA-1: b35ac2f1ecaf1586bf1ef8c2733aa347e7bb130e SHA-256: 502d49199952aad6361413c485bb15240dab6906f69e54cc64b0b1fa55afbf20

150 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 pointing to shopify.com, but one critical link directs to a known malicious redirector. The ML classifier also flagged this PDF as malicious. The primary attack vector appears to be a link farm designed to redirect users to malicious infrastructure.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 3

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.
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=japanese+numbers+hiragana
- http://files.kinderlions.org/uploads/1/3/1/4/131453384/1fbe65b.pdf
- http://files.breakingruleswritingcompetitions.com/uploads/1/3/1/8/131856492/b6d34c.pdf
- http://files.lab302.net/uploads/1/3/1/8/131871535/xoxonizoguwuw-vasexaboxukil.pdf
- http://files.patgreenwellartist.com/uploads/1/3/0/8/130874201/a948f7bf2d9967.pdf
- http://files.geraldinepilgrim.com/uploads/1/3/2/8/132815346/6780435.pdf
- https://cdn.shopify.com/s/files/1/0429/6481/1935/files/rojoxanuxa.pdf
- https://cdn.shopify.com/s/files/1/0437/3181/2504/files/rusafu.pdf
- https://cdn.shopify.com/s/files/1/0432/8580/7269/files/99013155323.pdf
- https://cdn.shopify.com/s/files/1/0429/6074/8695/files/8671422118.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/71419102660.pdf
- https://cdn.shopify.com/s/files/1/0429/2398/3001/files/mamelitiwimozavusitiw.pdf
- https://cdn.shopify.com/s/files/1/0429/5573/5193/files/xukod.pdf
- https://cdn.shopify.com/s/files/1/0433/0687/7080/files/5866669006.pdf
- https://cdn.shopify.com/s/files/1/0430/8231/7991/files/luludutonelogubakusukufe.pdf
- https://cdn.shopify.com/s/files/1/0429/3017/6159/files/9749243773.pdf
- https://cdn.shopify.com/s/files/1/0428/9187/0375/files/xomoxa.pdf
- https://cdn.shopify.com/s/files/1/0432/3321/4621/files/busiz.pdf
- https://cdn.shopify.com/s/files/1/0433/5068/7903/files/kolubojefatumukurumeti.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_off00007d5d.bin` `5c170bdca210f73c0691eff9a5b0ec70a41eefe37162d98c3c0007f03ddde66f`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7D5D	18224 bytes
`font_01_sfnt_off0000b795.bin` `cf6d4504cec29f81dd3ef08b234d1819abc904b72d4018825358c1f7c261b310`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB795	5332 bytes
`font_02_sfnt_off0000c983.bin` `acf548e388a67a2fcec31acedfd228643658276c61eddb1d315bdef425e341a3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC983	14700 bytes

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