PDF malware analysis — malicious · d07a2e447c9f0c8d

MALICIOUS

PDF

60.0 KB Created: 2020-08-21 14:41:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: ba5cfa8e7cb8509735408403dda5cc1c SHA-1: 3bf4b11921251868cfa9ad9ba6e2710760885b9e SHA-256: d07a2e447c9f0c8d5a50a451852a7b930f41c828649506ae75e7bbb903941f4c

150 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a mass external link farm, with the primary URL pointing to a known malicious redirector. The document body, though heavily obfuscated, contains the same lure text and URLs as found in the heuristics, suggesting an attempt to disguise malicious links as sheet music. The presence of numerous Shopify-hosted PDF files indicates a link-farming technique to improve search engine ranking and distribute malicious content.

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.ru/pify?keyword=deep+purple+keyboard+sheet+music
- http://patuwa.dkgtexas.org/uploads/1/3/0/7/130738554/2288017.pdf
- http://files.professionalanarchy.com/uploads/1/3/0/9/130968920/3446257.pdf
- http://melixip.familypromisegf.org/uploads/1/3/2/7/132740214/wusedul.pdf
- http://files.communitycatcarecenter.com/uploads/1/3/1/4/131406592/8186700.pdf
- https://cdn.shopify.com/s/files/1/0430/3909/6986/files/46342290512.pdf
- https://cdn.shopify.com/s/files/1/0434/4024/2840/files/pevagesegemetotopewenari.pdf
- https://cdn.shopify.com/s/files/1/0437/3826/7809/files/14196520513.pdf
- https://cdn.shopify.com/s/files/1/0429/5199/9637/files/81530391861.pdf
- https://cdn.shopify.com/s/files/1/0429/4826/4089/files/69041388389.pdf
- https://cdn.shopify.com/s/files/1/0437/4842/5889/files/42519654278.pdf
- https://cdn.shopify.com/s/files/1/0434/5305/5128/files/converse_plataforma_negras_rebajas.pdf
- https://cdn.shopify.com/s/files/1/0428/8492/3555/files/jepirutugemi.pdf
- https://cdn.shopify.com/s/files/1/0431/2095/1450/files/cg_song_dj_mein.pdf
- https://cdn.shopify.com/s/files/1/0433/8178/4726/files/bcbs_of_illinois_prior_authorization_form.pdf
- https://cdn.shopify.com/s/files/1/0434/1946/7927/files/83180685207.pdf
- https://cdn.shopify.com/s/files/1/0432/7496/1059/files/44165432763.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_off00008d03.bin` `d4e0b2484977518ac65d478fdfcf86ae5a183c6190c5e600535bca891b683588`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x8D03	3044 bytes
`font_01_sfnt_off000097b9.bin` `0935ea657f5f1f8a43368b3f061af13dbb6b712cb3f239490474f9903a168d9c`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x97B9	5620 bytes
`font_02_sfnt_off0000aaa8.bin` `70bf6a6e662dc9088efd9bc0c68e6598059521bee2853c27e6e363324ba3f5d3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xAAA8	17224 bytes

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