PDF malware analysis — malicious · e4192bf1c4c46524

MALICIOUS

PDF

52.0 KB Created: 2020-08-20 13:30:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 486f34caf8955549d5f76dc76c2167b4 SHA-1: 0a24ecd0bd013c8aaf91efc551ee5b59d37716ee SHA-256: e4192bf1c4c465249ec550ac119354e6ce372319e61ebd7ec7f0cb6405ebab21

120 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a malicious redirector link disguised as 'client facing skills interview questions and answers'. This link, 'https://ttraff.cc/pify?keyword=client+facing+skills+interview+questions+and+answers', leads to a link farm of 15 other PDF documents hosted on Shopify. The primary purpose appears to be to drive traffic to this link farm, potentially for SEO manipulation or to host further malicious content.

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.cc/pify?keyword=client+facing+skills+interview+questions+and+answers
- http://files.andyfowlie.com/uploads/1/3/1/4/131410662/6104328.pdf
- http://files.bigtrecreation.com/uploads/1/3/1/3/131379612/fasezojozixuf.pdf
- http://files.kvwilsonauthor.ca/uploads/1/3/1/4/131437864/sopenivoduma_mogaxudijixi_xomumabekemeboj.pdf
- http://gidamud.monicamillerdesign.com/uploads/1/3/0/7/130740072/1431015d1ab2e.pdf
- https://cdn.shopify.com/s/files/1/0431/7341/3032/files/manufacturing_business_plan_proposal.pdf
- https://cdn.shopify.com/s/files/1/0435/4818/0634/files/merirosanivovowabevelav.pdf
- https://cdn.shopify.com/s/files/1/0428/9495/0559/files/56754804062.pdf
- https://cdn.shopify.com/s/files/1/0433/4495/3509/files/alan_walker_ignite_mp4.pdf
- https://cdn.shopify.com/s/files/1/0437/2067/1384/files/tupivupisupelaboneso.pdf
- https://cdn.shopify.com/s/files/1/0434/9699/7030/files/chakravyuha_audio_songs_free.pdf
- https://cdn.shopify.com/s/files/1/0432/2613/6743/files/wudikogowirub.pdf
- https://cdn.shopify.com/s/files/1/0428/7974/6201/files/52303745465.pdf
- https://cdn.shopify.com/s/files/1/0432/9370/4356/files/tedezu.pdf
- https://cdn.shopify.com/s/files/1/0431/0935/1585/files/51206752247.pdf
- https://cdn.shopify.com/s/files/1/0434/1052/2279/files/18456925935.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_off00007e5b.bin` `9afd9536b7106703eefcc20525cf92c68e5207f59b1f8f89cd7846035f5e7fa1`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x7E5B	5436 bytes
`font_01_sfnt_off000090f5.bin` `7ea05e53700b5aa4a9f55b0912a3b72d1e62ad64c511e9ed6a92943149670526`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x90F5	10352 bytes
`font_02_sfnt_off0000b462.bin` `4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB462	4324 bytes

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