PDF malware analysis — malicious · ebecafe298a43176

MALICIOUS

PDF

35.6 KB Created: 2020-08-14 11:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ad0a1586864965c60c3b4f50d806c1af SHA-1: a33d321a6e24fae8964c0693774d6bc4094ed84b SHA-256: ebecafe298a43176bf4f9c4e1c9826d3cb5a068e9813ae569825343f2720163b

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a link to a known malicious redirector, disguised as a 'tenor recorder finger chart pdf'. The document body, though heavily obfuscated, contains this lure text and the malicious URL. The PDF also hosts a large number of external links, many pointing to Shopify, likely as part of a link farm to improve search engine ranking for malicious content. The ML classifier strongly indicates maliciousness.

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/wb?keyword=tenor%20recorder%20finger%20chart%20pdf
- http://fagoberug.breakthroughtc.com/uploads/1/3/0/7/130776644/velepiju-kanol.pdf
- http://files.proreefcorals.com/uploads/1/3/2/6/132680860/kuxixutovadigazazade.pdf
- http://files.thefordhambleat.com/uploads/1/3/1/8/131857419/6200154.pdf
- https://cdn.shopify.com/s/files/1/0430/9801/3845/files/certified_true_copy_stamp.pdf
- https://cdn.shopify.com/s/files/1/0430/6989/8903/files/ronut.pdf
- https://cdn.shopify.com/s/files/1/0429/1035/1513/files/trombone_sheet_music_free.pdf
- https://cdn.shopify.com/s/files/1/0430/9732/5732/files/fefapikedenatexusoxufova.pdf
- https://cdn.shopify.com/s/files/1/0434/4233/9992/files/caisson_metod_ikea.pdf
- https://cdn.shopify.com/s/files/1/0432/2879/0946/files/51246895518.pdf
- https://cdn.shopify.com/s/files/1/0438/4089/7174/files/xajoraloxulovopegeban.pdf
- https://cdn.shopify.com/s/files/1/0432/8187/5112/files/18940095072.pdf
- https://cdn.shopify.com/s/files/1/0431/9769/4109/files/64968746546.pdf
- https://cdn.shopify.com/s/files/1/0431/5624/2581/files/github_discard_changes.pdf
- https://cdn.shopify.com/s/files/1/0432/9200/0406/files/92040576802.pdf
- https://cdn.shopify.com/s/files/1/0430/8277/6725/files/temple_of_avo.pdf
- https://cdn.shopify.com/s/files/1/0432/9229/5333/files/wamanir.pdf
- https://cdn.shopify.com/s/files/1/0433/6310/6968/files/pokibegutizobo.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_off00004e5c.bin` `b3316ea32081ea1793ef8d103a0ec8fadf342271ab0935ae4a22490525d4eac1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x4E5C	5156 bytes
`font_01_sfnt_off00005fdd.bin` `e945b41171cd7ec872387b72443b1203a8ce2150f4545a44c0d2fddc2be38bea`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FDD	9824 bytes

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